The problem here is that this one really is Bush's fault... with Cheney vowing not to run there is no heir apparent so every RINO thinks they can be president.
It is a problem. Although it's somewhat liberating to not have the VP breathing down the President's neck, trying to walk the tightrope between being loyal and being his own person, as has happened in the past.
Anyone close to Bush would be savaged as a lapdog anyway.
But there should be some succession planning . . .