Hummm... a statement like that cut out conversation, really.
Rule #1: When the person one is talking to, put himself on a different plan, the conversation is over.
Shallow DOF & Skin tones underwater, I thought I was on Wetpixel not Dvxuser.
When I read phrases like the 5D2 is a "PITA" and terms like "fanboys", I assumed there wasn't going to be a discussion about the merits of FF vs other formats and how equipment choice is based on needs vs limiting choices by discounting a viable option, such as the new D800. So while you are entitled to dismiss a format for your needs (you are very welcome to state your opinion why here), I think there are people who may prefer the esthetics of the FF format. My apologies if I misconstrued your original post.
Furthermore, while WP is primarily concentrates on underwater use, it'd be limiting to keep all discussions just in that realm. There are uses of DOF and good skintones for close up underwater shots as well, as well as high ISO shots, which usually isn't cleaner once someone goes to 5000ISO with formats like APS-C or 4/3. Then of course there are the many small underwater productions shot by the 5D2, as well as B & C cams in TV productions and of course BTS making of shots. Those productions also use the cameras for topside, shooting closeup for interviews etc. It'd be again pretty limiting to buy a camera for topside and another for underwater use, when one can buy 2 or more of the same bodies and have backup.
The conclusion FF35mm betrays more flaws than other formats is not exactly true. Yes, 36mp will out resolve some older lenses designed for film because of how the sensor gathers light. However the resolution for 1080p video is pretty low, compared to say 4k, so lens flaws will be pretty masked over.
Corner performance has always been a problem for FF because of dome size in the old days, but nowadays a 9" dome is more available. APS-C and 4/3 lenses are also designed for the sensor size, and have the same corner issues when attempting the same FOV. I tried the 8-16 on an APS-C and the corner issues only disappeared using a 9" dome at f8... similar to the 12-24 (same FOV). An added advantage to FF is that there are more wide angle fast lenses like the excellent 14-24 f2.8 or 16-35 f2.8 or primes 14 f2.8, 21 f2.8 and 24 f1.4, which allows for wide FOV @ wide apertures (eg. 14mm @ f2.8 focused at 2.3m away), thus lowering ISO noise while keeping most things in relatively good focus. The corners will probably go soft but if it's a solo subject, it may be worth the loss of corner sharpness.