I reduced the dihedral from 2 inches to only a half inch so with a smaller prop I should be able to zip around a bit faster.
If the plane has too much dihedral for your liking maybe you should look at a shoulder or low wing sport planes. Trainers be defination are designed for stability. If you modifiy the specs too much you may end up creating a unmanageable plane.
You can get aerobatic trainers that are the next step from a trainer that are designed to teach you the basics yet still provide manageable landing characteristics.