I know it's not the right place for it but Saturn, as you have done some really neat applications to tune the N900, could you please create one to customize the transitions?
I know there is an application called transtitioncontrol but it is outdated and not very usable (doesn't show actual values at start). Maybe you could create a Desktop Tuner application merging customization of the original transitions.ini and new features provided by the CSSU (these shouldn't be available if CSSU not installed).
Also a good value to be able to tweak could be the WSEGL_UseHWSync in /etc/powervr.d/hildon-desktop.ini
This kind of tool combined with Swappoluble would make the N900 the easiest device to tweak in the world (well it's right now).