It was before my time at the TT but they made the move to ban the F1 sidecars and go forward with F2 many moons ago after similar safety concerns. I'm assuming that there isn't a class that they could go to from F2 without making it something that only gets used at the TT (and hence un-viable)?

In terms of the event - foe me the sidecars have always added something to the TT - just the presence of them maintains some of the 'grass roots / racing for the sport' aspect to the TT which appears to be getting replaced with corporate razzle dazzle in the solos. So I think that it will be a poorer event without them (maybe that's just the traditionalist in me). So I'd rather see a solution than a ban (although I felt differently when they were forever dumping oil on the course and causing massive delays to the solo races a few years back).

But I don't think that there is any question that changes have to be made.

A Moto 3 class is a must for the event to remain relevant and accessible to small bike specialists IMO. So hopefully that's a given.