Launch control is basically an anti-wheelie control program. It allows starts with large throttle openings and a "dumped"clutch, the ECU balancing the power and tyre grip to give maximum acceleration without the front wheel coming up.
When you see a MotoGP rider doing a wheelie after the race, it's HIM doing it, not the bike.
Shift assist/quickshifter allows clutchless throttle-on gear changes by momentarily adjusting the engine operation so the gearbox bits line up. The Rocket quickshifter allows all up and down changes except for first gear. With down changes, the ECU even "blips" the engine to get the revs right.