I think it's fine, however my only gripe is there is no way to counter the notification killer gets. It then becomes annoying as a solo survivor, so I'm hoping someday they come out with a perk to counter it. Because on Freddy, Oni, Blight, Nurse, Billy (etc) it can become problematic, especially when those killers run it with undying/ruin.
Tinkerer should not give Killers Stealth after all 5 gens are completed.
Currently it does, which does not fit into the perk design where it meant to stop gens from being done, not to do stuff in the late game stage.
I think you just summarised DS, Kindred and BT
Plus Tinkerer is easily bait-able. At 70% gen completion you'll work it out pretty fast after the first time.