I use Windows 8 on a small laptop (with low screen res) and on my media PC. I have a Windows 7 work PC and home Desktop and an old XP machine too for some games.
I actually sent a long and detailed document of my findings around the shortcomings of 8 to Microsoft and oddly enough, these new features actually pretty much cover my major gripes.
Yeah we all know TIFKAM is a culture shock but in all honesty I don't mind it (I don't really like it and having the choice of a menu would be nice but there were worse issues IMO). The thing that bothered me most was the "invisible action areas" that you had to hover around to do anything with (very hard with multiple monitors / RDP). The start button fixes this.
My other major gripe was the res restriction (I have to do the display scale hack on my laptop to run the calendar etc). So if they are being honest about app scaling being put in then that's pretty good. Same goes for more than 2 at once.
And search all instead of just my apps would be nice too (that way it's EXACTLY the same as 7).
Tentative thumbs up from me - as long as it's not all lies. I think I'll stick it on the laptop when the ISO comes out.