Good gawd the ripples...
Well, Earthforce probably sends Jankowski through the wormhole once they figure out if it's stable or not.
We won't get HH sent through b/c her entire ship is swiss cheese and crew is badly depleted...unless of course, the remainder of the ship and crew are sent through the wormhole b/c they lost power and couldn't maneuver.
IF that's the case...
-Havenite-Griffon war is still brewing.
-Earthforce gets a treasure trove of matieral to attempt to engineer.
-PsiCorp gets a face full of claws when they attempt shenanigans with Honor and Nimitz
-Minbari war may not happen if someone besides Jankowski is sent...maybe a neutral meeting actually occurs between Minbari and Human. That likely means Sinclair is encountered in a less freekish means...what would the effect of both Human and Minbari learning that their souls were mingling?
-There's shitload more shipping in the Honor'verse, so you'd likely see diplomatic vessels from Griffin followed quickly by large numbers of commercial hulls.
Those are just the first ones that reveal themselves to me.