I know that but the thing is that said Systems are something you can keep improving and thus eventually get a proper shield out of. Mind you trading for something in the meantime isn't a bad idea
Yeah but I don’t expect them to crack said shield technology at least until they’ve had a chance to fully digest Minbari science and technology.
They would trade some stuff but likely not their best tech. Things like shields, particular high end weapons, that sort of thing. I figure at least until the ISA they'd try to preserve something to hold over potential rivals
If it was anything else sure, but the new sensors are a literal game changer for whoever has them. For centuries Minbari jammer technology made them just shy of invincible to the other younger races. Now a way to beat it exists and as the Centauri showed, it’s up for sale provided the price is right. The sensor tech really would be just that valuable as it’s basically the sole difference between getting slaughtered by the Minbari and fighting them off.
Edit:
And it's not just
Minbari the other races would be worried about. Earth, Narn, Drazi and Dilgar all made out with quite the bit of intact Minbari war material in this war, including intact jammer systems. Sure it would probably take decades to reverse engineer(unless the Dilgar have another "miracle" or Earth gets the Minbari to help them with their tech) but all that means is that the military planners of the other races have decades to panic over the fact that once those jammer systems get reproduced, everyone
without the new sensors would be at the complete mercy of those
with the jammers(Minbari jammer technology really is an OP cheat, not even First One technology lets a ship so thoroughly tap dance all over those without the means to beat it).
The old balance of power has been quite literally shattered right now. The question isn't who would want the new sensors because of the Younger Races the only ones who
don't desperately need the tech to keep their fleets militarily viable would be the Yolu(who are just as old as the Minbari and could probably have beaten Minbari jammers on their own). The question is who would
sell the new sensors and to
whom? There are currently five races with the new sensors, Earth, Narn, Drazi, Dilgar and the Centauri. Of those five, the first four currently have a massive windfall of Minbari tech to digest and incorporate, and of those four the Dilgar are the ones who would only be interested in the tech of the Vree and the Yolu(as those are the two remaining major League races the Dilgar haven't yet gotten tech from). Now the Yolu probably have their own way to beat Minbari jamming technology and thus wouldn't be interesting in the new sensor technology, leaving the Vree. But Vree tech is based on recovered Valen War era Minbari tech(even if the Vree have taken it into a direction the Minbari didn't), so the Dilgar trading the sensor tech would be determined by whether they find the Vree's twist on Minbari antimatter tech worth trading for
now rather then developing for themselves in the
future.
Of the remaining three with Minbari tech, I suppose it would depend on whether they are currently satisfied enough with their captured Minbari tech, that they might not feel the need to loose their future jammer advantage by trading with League tech(though the capability and superiority of Dilgar ships, even over the Minbari in some ways, would argue against that position, as would the risk of other nations trading the new sensors away anyway and thus closing the trade opportunity), so it would depend on just how greedy the nation in question is. Earth would probably be content with what they currently have, especially since thanks to the treaty they will probably be incorporating Minbari tech sooner then the other three and the Drazi probably wouldn't be all that interested in the tech of the other League races as well(shields, whether they be Abbai/Brakiri gravitic shields or Hyach Harmonic shields, probably aren't that interesting to a race that only puts forward facing weapons on their ships because they considerer anything other then attacking an enemy head on to be cowardly).
Which leaves the Narn and Centauri. Now the Narn have an obsessive hatred of the Centauri and a large desire to obliterate the Centauri as revenge for their enslavement, and have historically always been far more primitive then the Centauri Republic(the modern Narn techbase being built off of bits of recovered Centauri technology during their rebellon that they could cobble together). The recovered Minbari technology would do great things to change that old paradigm but with the example of the effectiveness of the Dilgar's hybrid League tech and their singular focus on the Centauri(who already have the new sensor technology rendering Minbari jamming technology useless against them), they'd probably be
very willing to trade the new sensor technology for choice bits of League tech to further their future edge over the Centauri.
From the Centauri's side of things, well they've got the always hostile Narn on one side(whose fleets are going to slowly become quite capable even if they
don't trade technology with the League, never mind if they
do), the Drazi on another border(same with the Drazi), the Dilgar on a
third border(nuff said) and an ascendant Earth Alliance on a
fourth border. While they've managed to get the Earth to accept a treaty against allying with the Narn if Narn and the Centauri ever to war with each other, really that's still no guarantee that Earth stays out of things. It also doesn't change the fact that the Centauri Republic borders three
very hostile races that thanks to recovered Minbari technology will slowly start to out tech the Centauri over the next few decades. For the first time in a very long time, the Centauri are going to be looking at their borders and seeing that they aren't nearly as secure as they used to be, and while they will doubtlessly throw a lot of money at their admittedly very capable R&D departments to keep the tech gap from getting
too big, it's always easier to get a thing from someone else then to develop it yourself and again, the Dilgar are a
very good example of the effectiveness of combining together League technology to create a whole that's better then the sum of it's parts.
And since the window to trade tech only lasts until another race with the same sensor tech beats you to it, the Centauri are probably going to go on a "buyer's spree" of League tech as soon as they can, especially if they notice the Narn trying to do the same thing. Even without factoring in Earth and the Minbari, the foreseeable future is going to be
very politically unstable as one of the biggest military and technological arms races in the collective histories of the Younger Races kicks off with abandon.