I didn't realize that there were a lot more M&M titles out there. According to Wikipedia:

"There were several spin-offs from the main series, including Heroes of Might and Magic, Crusaders of Might and Magic, Warriors of Might and Magic, Legends of Might and Magic, Might and Magic: Swords of Xeen and Might and Magic Tribute (under development)."

Looks like you can add DM to the spin-off list as well, which is similar to the Crusaders/Warriors/Legends action games. HoMM has the most RPG elements of all the spin-offs and IMO is the best of the lot.

I hope they are done with the "Something-Something of Might and Magic" spin-offs for good!