I want to think about this for a minute...
Drew Brees was doing very well in San Diego, well enough there is a lot of argument about Rivers or Brees. They get rid of Brees to remove the contraversy
Manning versus Warner? What happened, Warner is out... Manning stands alone.
I can think of half a dozen more examples in history where this type of thing plays out. Most of the time, it ends with the veteran being shipped out so that the debate stops. Does it always work out for the best? No... sometimes, the heir apparent isn't better or even good. Can it work out? Yes, beautifully.
In my mind, the griping about the decisions, the fan drama, etc will just lead to us having to trade or release Warner. I really don't want to see that happens, there is something nice about having two quality QBs. (Or two quality WRs).
Lets just let the coaches do their thing... if Leinart can't handle it, he'll be out. Whiz has already shown he'll do what he has to to win.