for 1/12 I would recommend trying either the high traction or touring stock settings... probably high traction for mod, and touring stock for stock
Same pretty much goes for the buggy... might want to try the high traction profile for both though... it will be a little smoother for offroad!
I don't know if there's just one thing I could think of ... There are so many cool technologies and organizational ideas that would be great in RC...
It'd be nice to see li-poly or li-ion cells that are capable of higher discharge rates...and that are a bit more robust than what is currently available... anytime we can lighten our cars it'll make evertyhing easier... making run time, making your tires work, finding your setup...etc
I'd love to see points series events determine national and world titles.......it'd be harder to attend more races...but I think it would prove who was the best most consistantly...not just the best at one particular track because they have the only car that is allowed to run there throughout the year.... etc etc.
Geeze...so many other cool things to bring to the table....
I don't want to take up them all... got to let some other people make some suggestions