Crosmando: JudasIscariot, can you please direct me to a fantasy TBS that has as many unique races, unique spells (organized into 6 or more schools of magic), 2 different planes of existence which can switched between, unit types (86 for MoM, also with unique racial units), as many Wizards, Heroes and Champions with unique abilities and items, etc?
Maybe Age of Wonders Shadow Magic or Dominions series comes close, but I can't think of anything else.
Certainly. The Fall From Heaven mod for Civilisation 4, and its modmods, are well made and - I think - meet your specifications. I haven't counted everything precisely, so it may not quite meet all your requirements, but it surpasses it in others. For instance, there are...several actual races, but more importantly there are about 40 civilisations (each of which plays as differently as races in MoM, even if they're the same species). There are about 8 schools of magic, and if you play the originally-named Master of Mana modmod I understand that there's quite a lot of spells in each school. There's only one plane of existence (the base Civ 4 game doesn't have the technology to implement multiple, sadly), but there are many unit types, and most of the units a civilisation can build are unique. And yes, there are plenty of heroes who can join you, generally as a result of certain actions rather than RNG and a "fame" score. There's also a tech tree, which MoM...really doesn't have.