The most anticipated race.

I've already waited for my most anticipated race.
Although, if I had to choose from everything listed, I'd go with "Barbarians."

Dwarves aren't cool; they've always been with elves (or with mages in the fourth game!), so it's better to choose barbarians or swamp creatures!

The dwarves who served mages (in the fourth game) and elves aren't the same dwarves we see in the add-on.
Ahem, let me try to explain why:
The thing is, in the Russian language, "gnom" translates to "dwarf."
"Dwarf" also translates to "dwarf"!). I think the ones in the add-on are "dwarfs," and the ones who serve elves and mages are "gnoms."
So, as you probably understand, "gnom" and "dwarf" are completely different races.
World of Warcraft is a good example.