What exactly is a tyranny to you? Right now the courts have too much power because of money. Could obergefel happen or other political decisions like roe v wade if private lawyers couldn’t make tons of money paid by special interests to argue for those interests that are against the common good. What I advocate would make the courts less powerful as they wouldn’t be able to be a seperate 3rd branch but subordinate to the other two.
How would it make the courts less powerful? No longer having a standard of objectivity to at least
try to have judges adhere to, even though they so very often fail (or with many leftist judges, don't try at all), is better than having them be readily and voluntarily partisan.
Further, giving the legal system control over who your legal representation will be, is just giving them further arbitrary authority over whether your defense succeeds or fails. If the person or council making such decisions doesn't like you, they'll assign you an incompetent, or barely competent, lawyer, and that'll be that, if not one that will outright work against you. You'll be finished.
You really are coming across as just another person who sees (real) problems with the current system, but thinks that your other system will somehow
not have problems. A hypothetical idealized system will always trump a flawed system actually being used.
I would much rather try to push out as much corruption as we feasibly can from the current system, than try your system that would make the courts even more powerful and more prone to corruption.