Why do you want to see huge baddies on film? We are getting the Abomination this June. And Iron Monger totally rocked. But having too many of them is overdoing it.
Now that I think of it there are a lot of hulking bad guys in marvel fims of late; Galactus, the Russian, Juggernaut, Kingpin.
There are are enough slimmer bad guys to tip the balance though. Green Goblin, Magneto, Black Heart, Bullseye.
Well maybe not enough to totally tip the blance, but I never saw a problem with taller bad guys.