Active suspension will kill the "unlimited" nature of the TT class. One team will spend the inordinate amount of money to get it to work, and it will be such an overwhelming advantage that they crush everybody else. The system will then get banned to avoid an arms race (that none of the teams want) and to keep the racing interesting for the fans.Active suspension was held up by shaft velocity, heat, and slow activation of mechanicals and digital. It seems to be all coming together and we might see it soon as a spin off of an OEM digital system. I would think a first step would be to put the antis and sway bars into the shocks. Then decide whether one straight line tune would be sufficient for a race. I am not seeing any mystery in the mechanicals, just the sensors (accelerometers), programming...and patents. This is a way higher level than suspension design and probably up there with engine development.
This has happened repeatedly in F1. The vacuum cars. The 1500hp qualifying only engines. Active suspension. Active aero. Traction control. Antilock brakes. All banned after somebody spent the cash and then crushed everybody else.
TT has worked as an "unlimited" class because nobody has really gone hog wild and actually spent an unlimited amount of money. I really hope it stays that way! It's one of the coolest things about it.