Against enemies with taunt ignore (notably, Jedi Knight Revan) Omega's permanent stealth is not preventing targeting. There was a fix rolled out for CX that on it's surface feels like it should be fairly simple to copy over to JKR. I have attached a quick screenshot of a small portion of both CX2 and JKR's taunt ignore coding. On CX2 they added stealth (seen highlighted in the picture) to the list of effects that cause him to not add that character to a list of toons he can target. On JKR he doesn't have stealth on his list of who to ignore. Please add the "stealth_buff" tag to Jedi Knight Revan's taunt ignore code and any other taunt ignore characters who are lacking it.
The New Bad Batch faction is so much fun and should be stronger than they currently are due to it being so trivial to circumvent their primary defensive mechanic.