keyplayer, my personal answer isn't the one you want to hear: my next mixer may well be no mixer!
The reason is that I use Pro Tools for 95% of my mixing anyway, and in some ways the DA7 is overkill. I use it for synths, HUI mode, its high quality monitoring, talkback, routing digital and analog signals (increasingly including softsynths), and for format conversion and a general way of dealing with the various things that come in.And I use its scenes.
What I don't really need is the onboard eq, compression, and automation.
So even though I'm very enthusiastic about the DA7, I'd love to get by without a mixer. But the truth is that the DA7 works too well the way I'm using it to even consider replacing it. What else is there? A Speck mixer would cost more than I could sell the DA7 for, and I'd be giving up all kinds of functions. Another 888/24 8-channel I/O for my Pro Tools system would cost about the same and provide much less - and require starting up the computer every time I want to sit down at a keyboard and try something out.
The truth is that this is the right product at the right price for a lot of applications. I'm not sure there's a big market for $12k mixers anyway.