Ok so aside from the obvious developments like depower and single line flagging systems, it would be interesting to hear your 2 cents worth: The best vs the worst - gizmos/ gadgets/ "must haves"

I'll start

Best: Velcro leg straps - prevent wetsuit jelly legs a bloody treat

Worst: Heel straps - thought they were gonna be killer back in the day when I got them, caught so many front edges I took them off the same afternoon I bought them