Maestro Mod is a big mod for Might and Magic VII, which is based on famous Big Daddy Jim's Rev4modR1, and keeps all its developments, also adding many new graphics and other improvements.
While i have played little what i have seen looks promising and gives a new feel to the Might and Magic 7 Experience that will make playing this old classic a relatively new experience that can only be appreciated by playing it.
A smart thing to do may be creating a new copy of your game to install your mod to ;).