Based on the show Vaizards r faster than usual, even if u have a fast bankai ur still about 1.2-1.7 times faster, also they r very flexible. I believe that vaizards should have a 5-10% chance of avoiding a direct frontal attack when wearing the hollow mask.

There's actually 2 reasons vai arent as fast as they should be...

1) Their cero blast is incredibly fast and 2x stronger in mask due to rei boost

2) Ichinubs would exploit this and you'd see em dashing around the screen so fast getsuga would become undodgeable

and yes, i've only seen mabey 1 non ichi/byakuya vai XD

plus how would this be balenced you have make it fair for other races

Wrong, Cero's speed is the same as Kidous and Mask doesn't boost ReiP so Cero with or without mask has the same power..

ALL projectiles move the same speed. It's just you don't see as many Ceros as you want.