Bronz_Deck
Honestly i love the realism I like that he understands that he will not be able to reach the top even with secret gear, so stealing other people's gear is now necessary rather than a silly excuse because it is still possible to obtain it without killing them—all he has to do is level up his alchemy and enchanting skill set and take it.
Also two argument against revealing himself is that he doesn't actually know if this rias is nice or not and dealing with the devils regularly propositioning to join them would be annoying since they really dont care about personal space and "home invasion" not to mention casual privacy invasion too.