“Heroes of Might and Magic V: Tribes of the East”

Hello, I decided to play Heroes of Might and Magic V, specifically the campaigns. Could you tell me if I need to install all the games in the series to play all the campaigns, or can I play all the campaigns (Hammers of Fate and the regular Heroes V) directly in "Tribes of the East"? If not, is it worth playing anything other than "Tribes of the East"? I remember the regular Heroes V seemed a bit underdeveloped a long time ago, and I haven't played the others.

Also, can anyone recommend some mods that don't change the gameplay too much, like mods that add a skill wheel directly into the game or something similar, making the game more convenient to play.