Pretty much the only reason I want 2.0 is for multitouch support...
No no no and no! Multitouch is the last thing I would upgrade the phone for. MT option is mostly useless, it does a trick or two and that's it. I can't imagine how MT does improve functionality in general (because it doesn't) and I can imagine dosen things new Android 2.x can really improve. Anyhow it depends of Samsung (drivers & hardware - Galaxys HW limitations might be a problem I believe) and apps to support multitouch, not the Android 2.x to do it.
(Pozdrav svim HR Galaxyovcima)