I'll get one. I just had a play with a Summicron-R 50/2 on my partner's a77 (at night here), to see how the peaking worked with an alt; I found it very easy to use indeed, as do a lot of NEX7 users. The a99 has all I need and more, and the reservation about the 24Mp resolution is outweighed by the DR gain and noise 'character', as much as the reduction in noise.
A scaled up a77 with a better EVF is quite a pleasant prospect and the light weight reduces the camera/lens net quite a bit (850g for the a900 vs 730g for the a99). My Contax 21mm wants to take a drag with it also, I figure high contrast lenses will do well with the greater d/range and detail.
'Glossy' suits my subject matter very much, thanks for your thoughts thrice, much appreciated. They may sell a few of these.