It really depends on how you set up the airplane. Moving the CG back and increasing throws will make it very agile. Moving the CG forward and decreasing throws will make it docile.

The amount of dihedral used depends on the type of flying the design is intended to do. For a neutral airplane (no roll coupling with rudder), a low wing needs dihedral, and shoulder wing may be flat, and a high wing might require anhedral. If you remove the dihedral from a low wing design, you quite often end up with an airplane that rolls left when right rudder is used. This is known as adverse roll.

Most full size airplane are designed with some dihedral effect so that a low wing can be picked up with rudder. This is to give some redundancy to the controls, for instance you can fly the aircraft with just elevator trim incase the elevator gets disconnected from the control stick.