You could also monitor: primary and secondary skills, the skill tree for secondary skills, the quantitative and qualitative composition of the army, the level and class of the Hero, morale and luck, the Hero's alignment, but that's already bordering on cheating, so I won't implement it.
I'm all for understanding the mechanics of Heroes... I'd be happy to implement hiding the MP of other Heroes, but... all Heroes are present in RAM: Gelu, Kilgor, Dracon, etc. You can also monitor the starting army, but it seems like you can already see everything from the MP value.