i second all of the above.
Flipping, respawing and parachutes as a must (in my POV)
Transportation pickup
Speedpickups and maybe placeable traps. Just like Mario-Karts, hrhr.
yeah vortes gliding is fun.
but parachuting is fun to.
and there wouldn't be so many problems when starting.
for now its either you start first, or you get right into a brawl.