It will be interesting to see how the player-coach dynamic works out with Kidd and Avery. Kidd was probably a little spoiled by Frank here so he may not be used to dealing with a "tough" coach. At the same time Avery hasn't had a PG of this caliber before, so I am sure he's going to soften up a bit with Kidd.
It will be fine IMO. The whole coach killer thing is very overblown. I don't know about the other coaches and his relationship with them but the only coach that I saw he got fired was Scott and he deserved it.