I don't think any skins should be removed, especially Fluffy Puff considering how it is the easiest on the eyes of any of the skins, however it should be upgraded, also so that you can see what PM's you have replied to not just read as I can't notice a difference, I do prefer side postbit, however both work fine, I find Classic to be harder on the eyes however.
Also signature sizes may wary between the Classic(and FP) and 2005 because of certain lines of text will go to the second line in 2005 where as they will stay on the first line in Classic, and if you're close to the limit that could take it over the limit.
