Like others I expect that the superlinear rewards curve has the opposite effect of what you predict as it's increases the votes of whales and diminished the votes of plankton.

I rather expect a suplinear rewards curve like √x to have the effect you named as it supports small contributors and limits the power of whales.

Especially after the air drop has less failed and there are only a few holder of PAL token.

Well, time will tell.