On the OP you state that you want your ID (if you got/get official) to be considered as a Junker ID, so that's where part of the confusion stems from I believe. Would you be wanting to try and achieve Junker faction rights if you do get official? (I probably should've asked this earlier).
The only real issue I would see here, in regards to stuff Junker related, may be T&T using Junker ships. I guess technically it's part of their lore though and it'd be better if they earned them via interacting with other factions since they're Freelancers now I guess. That might be quite difficult though given the lore of Salvagers however. Not like they couldn't just use Hegemons and the like with a mining bonus instead though, which probably would be more fitting for them anyway.
I'm impartial when it comes to their officialdom - I wouldn't really see any major issues if they got official to be honest.
The original drama with JM and Congress stemmed from initial attitudes and skeptism that the latter had which eventually devolved into something nasty. I really don't see (at least from the JM side of things) such dramas repeating with T&T as I think these dudes are pretty chill.