I think WAR should have cut the elves.
Seriously, no elves would have meant that there were only four main areas: Dwarf, Greenskin, Empire, and Chaos. This would have increased the concentration of players in each area. That would have lead to better PQs and PvP. I think that WAR is a game which really needs a minimum number of other players to really work.
As well, Mythic could have spent more time on those four areas and eight classes, adding more polish.
The elves would have also made a really good first expansion pack.
It seems like a lot of video games make this same mistake, attempting too much, spreading themselves too thin and doing a substandard job.