Acciacatura: Two Playback Options

This might be considered of minor importance, and might have already been suggested... But some people believe acciacaturas be played on the beat and others before it... To be honest I think appogiaturas are for on the beat while acciacaturas are for playing before it. I never played acciacaturas on beat, perhaps in baroque or classical pieces, and I was never taught to play them like appogiaturas. And think about it, why have both if both have the same purpose? So for a middle solution perhaps we could choose how acciacaturas should be heard in playback. (Also I want to suggest portamentos for instruments that can do it like voice or violins )