Bingowings said:
... the Time War.
It just seemed like a war... too wimey not timey enough.
Now this I actually agree with. I would have liked to have seen proper Time Lord weapons - i.e. doing serious damage to the fabric of space and time - not just generic OMG LASER GUNS PEW PEW PEW.
But hey, The Five Doctors had plenty of flaws, but I loved that as well.