The sluggishness is no doubt the result of bogging down the UI with boner-inspiring graphics and in the case of Digico it's because the control layer runs on Windows, which I suspect is the same of the Vi series. I feel the same way about integrating analog modelling, which is becoming a common "feature" of many consoles. The last thing I want to bog down my DSP with is redundant modelling of what I already own in outboard, which accomplishes much more than modelling or 96kHz. These are becoming the "features" to justify 10's of thousands in additional cost, far more than the cost of actual analog units to insert on the main bus, and needless consumption of finite processing resources.
I've always been an advocate for the separation of facilities to control sound (EQ, dynamics, etc) and facilities to color sound (tubes, transformers, etc). It was always a detriment to analog equipment, and is becoming the exact same detriment to digital. I really wish digital would just stick to the control that it does best, and leave the coloration to analog. I will never be happy about paying for modelling software and additional DSP on top of having already paid for the analog gear that does it better.
As for 96kHz, I just can't justify telling clients we have to use crappier mics and speakers because I blew the budget on a 96kHz console, mostly so we can think it sounds better with absolutely no evidence it sells tickets. There's just always something that offers more benefits for the cost. Even 48kHz consoles use converters that are capable of at least 96kHz anyway, so it's not like 96kHz consoles offer better converters. Even X32's have Cirrus Logic 5368's, which are plenty good 192kHz converter chips.