What’s really pleasing is the return of the button from the fourth game that allows players to hire all available creatures at once. I’m 99% sure that’s it.
You haven’t played the fifth Heroes game enough, because that button is there.
I’ll say something else about the screenshot; I don’t like the blandness of the menu. What is this dark window? Why couldn’t they make it beautiful, like some kind of parchment? Or simply make a reference to the third game and make it with a blue hue, with some golden patterns around the edges.
It’s a small thing, but it’s unpleasant.