I think this is a great idea. I too have some experience with FX work (though limited). I may in the future also offer my services to help others as well. I personally think that this thread should just be a place to offer services if you have the means and a place to offer suggestions as well.
as far as suggestions go, I would have to agree with darth_ender. finishing off some of the deleted scenes would be a great resource to this community. I personally would work on some of the PT deleted scenes, especially those found in ATOC. It seems to me that many editors here use the deleted scenes from ATOC more often than not and the Obi-Wan and Mace Windu scene, though has most of the CG work done looks a bit off when they are talking on the landing. the background doesnt seem to really fit with the real life actors very well. if there was someway to make it look better, or even redo the Coruscant background all together that would be great.
also is there any way you could send me the “Floating/spinning Grievous” just by itself. I may use it for my own edit. Unless you have added Grievous to the rest of that scene, ie dooku opening up the hologram.