Why do i have a feeling i saw Frogboy over at Battle.net forums? Of course i could've mixed up his SC2 name with someone else. (Reading the forums somewhat, not really writing anything. And cursing the region locked forums)
Overall SC2 feels pretty good but... it's pretty much about massing armies. Can't find much use for casters, HT is pretty useless, since Psi Storm has so small area in SC2. I think it's smaller than in SC, at least, not to mention nerfed damage (112pts->80pts over time) Casters are too small, battles too fast (fast is good speed, faster's too fast) to have time to select the caster... Yeah, i know, TAB cycles beetween unit types (a la WC3) but since armies don't move at the speed of the slowest unit, casters tend to get left behind.
Phoenix and Stalker don't feel poweful or anything.. just a tiny bit more damage for them please.
Musics are good, though Protoss need more music (they've got one track ATM).
All matches lag. Are the Beta servers located in NA only? That might explain the lag, WC3 doesn't lag, nor do any other games i have.