HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

It's already been done.

I'm referring to the case where you cannot hover the cursor over an object. For example, if a hero is standing on a Hive, you can only check how many wasps are inside if you move the hero off the Hive (i.e., lose movement points), or if you go straight into the Hive. Or, the situation can arise if the terrain obscures the object, and the hero is standing on the object. In some cases, it can be useful to take a small/pre-mini Hive early on, but it's risky to go into large Hives, and you don't want to lose movement points by going straight into them. This situation isn't very common, but I think it would still be useful.