Do you still play Heroes of Might and Magic III after the release of Heroes of Might and Magic V?

You're wrong about Heroes 4. Its only downside is the AI level.

I already said that I didn't understand Heroes 4 at first, I didn't like it, but then I saw many advantages in it. The alt-upgrades change the style of combat, I liked the progression system, and I really liked the idea of introducing caravans, etc. There are many advantages in Heroes 4, and the AI level is quite acceptable, maybe it's not noticeable on the first two difficulty levels.
In general, I like the game, and I still play it online with friends...