The Ability to specifically Random character as antag

[LeahTheTech]

I've thought about this a bit and I understand the desire for it, but I think in practice it wouldn't be good for the game.
The effect would likely be a lot of known characters who are guaranteed to never be antags and so have inherent meta-trust, and lesser known characters or random names being treated with even more suspicion.
Yes, you can do that currently by just playing a certain character with all antags turned off but most people don't want to lose all antag rolls and so the number of known "trustworthy" characters is limited.