Status Linking in gdb to the running plug-in works well already. We could use a tutorial page for this, if anyone wants to volunteer. It shouldn't take too much time to do. Matthew has already modified a bunch of the existing plug-ins, and for most, the changes take at most two or three minutes. Layers Should be in 0.6, I believe.
Previews Provide a small preview window which shows how the effect shows up on the image.
This makes sense only if the image is a canned one, not a preview of what the user is about to try. Let the discussions begin. Coordination amongst the teams will need to be taken care of by those teams. For now, all discussions should be on the developer list only, since all of this is only wishful thinking at this point.