a lot of these systems are set up for a dedicated 'engineer' running the DAW for a band or artist. I'm a one man shop, and I already have a keyboard and a
"KEYBOARD" in between me and the monitors. Even though I just upgraded the latter to a Novation SL Mkii with sliders, knobs and buttons, I still use my Frontier Tranzport for transport controls as it eats a whole row of knobs on the Novation (no dedicated transport) which are better spent on Solo or Mute type functions. IMHO, for the solo producer, this type of layout is the best. I have two monitors, but can imagine something like the Novation, but with a half-height 27" monitor built-in at a slant for touch-sensitive controls. I have seen this layout in instrumentation and industrial controls, so I know the displays exist. Then I could have a single monitor dedicated to track view on a conventional 27" above and the 49-key controller would fit nicely in a narrow slot. The built-in monitor could switch between a couple of layouts, and for this function I would be willing to give up the tactile nature of sliders. Keep in mind that with a screen, you can make the sliders 10" high for intensive mixing, or shrink them during tracking to allow room for plugin controls and other stuff. You could even program a plugin 'tiling' system that used the existing popup windows and filled the half-height monitor with 5-6 plugins at a time, saving views in a project as you go.
If money REALLY is no object, I know several groups of people here in the SF Bay Area (ex-DigiLab types) that would be completely jazzed to take on this project if they had funding.