Ment
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Map section. Check the reviews to see what people like.
Mod section. Pay attention to:
1) NCF – a large mod with new creatures
2) NHF – a large mod with new heroes
3) EWA – a collection of many mods and maps. Perhaps this will be the easiest option for you, as it's all in one package.
4) "MMH5.5 - Heroes of Might and Magic 5.5." This is also a large and quite ambitious mod with a lot of changes and additions.
Of course, it’s worth looking at other things too, but these are the ones that I think have the best chance of meeting your needs.
Mod section. Pay attention to:
1) NCF – a large mod with new creatures
2) NHF – a large mod with new heroes
3) EWA – a collection of many mods and maps. Perhaps this will be the easiest option for you, as it's all in one package.
4) "MMH5.5 - Heroes of Might and Magic 5.5." This is also a large and quite ambitious mod with a lot of changes and additions.
Of course, it’s worth looking at other things too, but these are the ones that I think have the best chance of meeting your needs.