One thing I would like to see at some point would be suppression of life support warnings for craft that have no crew. In case that's confusing here's what happened to me: I sent a lander to Mun, collected science with the kerbal inside, returned to low kerbin orbit, and then transferred the kerbal and the science to another craft for re-entry. The lander remains in LKO, empty and marked as debris, but still generates messages in TAC LS because it was low on life support resources when it was last checked, I guess.