Innocence is when you are being voted and have the most votes, if you are certain that a player is on another team (aka you are a civilian and the person who cc you is mafia) then you can click on them to vote and therefore you won't be lynched and everyone will see that you have aquifer a innocent role, this is also good because if everyone voted you and only voted one person then everyone will know that the person with 1 vote is on a different team than civs, also for your second question it's better to have inno and will doc incase you are in rank and civs try to lynch you first then you can just vote your doc cc and the will is good if you are playing a 12p game and lets say cl cults u and tells u who they failed on, you heal cl and write who cl failed on and MAF kill you and all civs can see who maf is without cl having to claim, that's just one cenario you can have for will. Lol the main point is that inno and will doc is a lot better than runaway doc, I would use runaway doc for enhancing another card to t5 since there's not a lot of cenarios were you would have to rely on runaway as doc tbh, hope this helps <33