David - good to see you here - a fan of SurfaceGeek (in fact, I started this whole mess here and at TabletPCReview by pointing to your podcast about returning the SPro 3).
Since we are all dragging the "fight" over here, I'd like to repeat my observation over there as well:
"I agree with Jeff [jnjroach]. For 80-90% of users, the SPro 3 can replace their ultrabook and tablet. I have not tested, but have OWNED, numerous systems, as you all know (MacBook Air 13, MacBook Pro 15, Dell XPS 12, Acer Aspire V7, Surface Pro, Surface Pro 2), and with the exception of the rMBP 15, it meets or exceeds performance of all of these.
Am I a gamer - no.
Do I compile large programs - no.
Do I manage mega databases or spreadsheets - no.
Do I edit large RAW photos - no.
But I've had no problems with day to day productivity apps; OneNote; PowerPointless; Netflix HD; Skype; general browsing and media viewing. So maybe it is only valuable for us computing wimps, but I think not. The SPro 3 is what it is, and if it is not full powered enough for your needs, perhaps you need to look at a more robust solution.
This is NOT to minimize your concerns and frustrations, but in this form factor and feature set, it is a godsend, and pretty much is the Holy Grail we have been searching for. Good luck with your quests."
Hopefully MS will be able to tweak some settings to address power user concerns at least in part. But as it stands, the Surface Pro 3 is the best "Swiss Army knife" of ultrabooks and tablets. Would I whittle all day with that blade - no; would I rebuild a car engine with the screwdrivers and pliers it may have no; would I carry it all day for whatever might come up - you bet. That's how I see the SPro 3.