Hello there,
I've been to Corona Academy (proud mode : on), and i have the corona bible here.
But as my memory is poor, i always have to look for the "GI vs AA" way of setting the param.
I think a simple slider (going from 4 to 64 that are the min and max relevant values) would help :
AA : 4----------64 : Gi
Same comes for Speed vs accuracy...
Easy request, isn't it ?