It's been a long time since I played this game (not since the release).  

For those of you who have followed it and/or play competitively, have you seen any one race/deck that dominates?

I ask because I hope the answer is none.  What have you seen?

 No one has any thoughts?  Just wondering if the game has maintained balance 

I am only a casual player so this is not so relevant to me, but you know half the threads in this forum are about meta games and decks that allegedly overpower and dominate the rest. Just have a look, you will find plenty. 

Right now, there is definitely a loser deck - HEs.=) About the strongest ones: Most players prefer Empire, which at least for now, is super strong control deck. The rest of factions are played relatively equally with current preference given to Dwarves (after that Chaos Control/Chaos Rush/Orc Rush).

Though, it could be the way people play and could change with more players joining the game (if any^__^). Plus, new battle packs (the ones released recently) can prove to be a game changer through new Chaos Hero&Chaos Quest, as well as new Orc Units, etc.

PS. You can also look for a link to Polish WHI Website which lists dozens of tournaments they have every month or two (it doesn't show the decks, but it shows races used by different players). And it could be a reasonable estimate for races' strength distribution, since Polish WHI seems to be one of the most thriving ones (next one or the same scale environment seems to be an Italian one.)