this camera is seriously tempting me, maybe because I'm in a minority group - my current kit consists of the 600D & 450D bodies, with the following lenses:
EF 28mm 2.8
EF 40mm 2.8
EF 50mm 1.8
Tamron 24-70 2.8 VC
Sigma 70-200 2.8 OS
Tokina 11-16 2.8
along with the 580EX II and 600EX-RT Speedlights
with the exception of the last lens (which I usually only use on my "backup" body if I'm using two at once) they're all FF compatible.
Most of my work is social photography - nightclubs parties etc, with a bit of landscape and portraiture here and there, so the AF system doesn't worry me.
Small boost in MP, again, doesn't phase me - probably a downside considering the number of shots I take per gig...
SD media - perfect, I've got 8 or so cards floating around here
No built in flash - primary downside for me, considering I do a bit of off camera flash triggered by my 600D, but then if I get the Speedlite 90EX with the EOS M I'm also considering for my gf, that does flash triggering too...
Wireless - cool, will work well with my current system using an Eye-Fi in the 600D
Non-articulated LCD - oh well, can't have everything I want - does come in handy sometimes
if it's priced around the AU$2k mark, I'll probably grab one - working at one of the biggest camera retailers in the country has it's advantages if I want to borrow one to test out, or get a slight discount on....