Near the end of COH - I believe WARE ran an earth dom team that was sickening. You would have to ask vinnie but I think it was a combo of recharge and emp buffs. I also believe Peril would roll with a plant dom in PVP as well. Ownage used to run a dom in PVP 2v2s as well I believe it was the psi power tree - he used TK. There was a guy in Sirens call, I forget his name but he came from Victory PVP he would quad box and exploit veng to get perma dom.