Just a simple request for an option in the "Video" tab of the settings menu, to disable the screen shaking upon explosions, taking damage, etc.
Yes it looks cool and adds a bit of "oomph" to gameplay, but in my experience it's a bit disorienting sometimes, and is the cause of quite a few stop-the-world lag spikes.
Just my drop into the huge pool of suggestions. :)
There were a lot of complaints about the red screen effects and shaking that came with the pet update. You can disable it now. I don't think there is any way to disable all shakes, a Nitronome blast will always make your screen do a backflip.