Imps suck. You can't sugarcoat the amount of badness I've seen. I get far more wins on my Pub Guardian than my Imp Marauder. Not to mention the fact that I've seen far more good Pub players than good Imp players. There are very little on Imp side that I can say doesn't suck.
"Server transfers are coming."
"Cross-server pvp queues are coming."
They'd make such a difference, but I think most people have given up hope and left. So Imp is only getting worse and worse, unless you're in a premade and even then its not a guaranteed win.