Excessive initial ecceleration can cause problems with certain types. I
have experienced it with 2 types.
PW5 with stick fully forward at the start of the launch. Hard acceleration
caused the glider to rotate from the nose wheel to the tail wheel and
rocket into the air. I only managed to regain control at about 50ft.
The other one is the K8. Light glider, high wing. Similar problem.

If slow acceleration is a safety problem what about the ground run and take
off with aerotow using belly hooks, and autotows?