I definitely agree with bat on the fact that an innocent menu would be over-powered. Although I would like to make a point on what he said about the detectives killing multiple T's in a single round. If you have ever spectated newer players play as the detective, you can see that they almost never get T kills unless the T shot someone right in front of them. Therefore, I believe that eliminating T's as the detective is purely experience and skill-based. The detective should know how DNA works and when they are allowed to kill someone. Newer players often kill off of their first instinct which ends up with many rdms. There are many things that the detective needs to pay attention to such as but not limited to: gun sounds, mic chat, who is proven innocent, and who is high sus. So, I think that the detective has the highest skill-cap between the 3 roles. This role is balanced atm in my opinion.
Switching back to the innocent menu idea, although I previously said that it would over-powered, it could be implemented with some severe restrictions. The taser for innos could only be an option if they personally killed a T or they were tased by a detective. On the other hand, that could lead to a large amount of tasers going around which would imbalance it for the T's. A health-shot could become available once a round if they have already killed a T. At the moment, I'm very iffy on the idea of kevlar because that would make it THAT much harder for the T's. And helmet is a no-brainer: definitely not.