Firstly, fantastic game! Can't wait for the next update :)
I've been playing a bit today and was thinking it would be nice if after a run you could see the details of the doppelgangers you captured and which neighbors you've killed. Sometimes I survive a run, but I've captured a doppelganger I wasn't 100% sure on and I'd like to know what the difference was, even if I captured them anyways.
For example: I let in the real Steven earlier, then his doppelganger shows up and I can't find the issue with the doppelganger. I capture them anyways, but now I'm wondering if I let in a doppelganger earlier and just killed the real Steven. Then when I get to the end of the run I survive, but I still don't know what was wrong with that doppelganger. Being able to see what the issue was at the end can help with future runs.
And as far as knowing which neighbors were killed, it can help to know whatever I thought was wrong was actually correct.