The HW aspect of TI is essential IMHO - otherwise we really could think of using a TI SW plugin...
The many knobs look appealing but because you still have page assignments to knob sections catching up values with absolute pots is annoying. I would highly appreciate if the next TI comes with incremental encoders - eliminating the value catch up problem. LED rings would be great, so I know that's a cost factor.
Please add isernet - don't just upgrade to usb2 or firewire as interface.
Finally, what about a less expensive TI pc card or an external TI box with even less controls than the snow but more processing power?