I would love to have another PvP slot, too. I get so tired of making and deleting Starburst eles, touch rangers, and trappers. I can practically do it in my sleep. I even have a designated hairstyle and face for each of the three, to make it easier to remeber which I'm playing (Is that a touch ranger or a ViM trap ranger? Oh wait, my husband set it up for faction farming! Argggh!)
Of course, I think it is possible to have too many PvP slots. On our second account, Paul has...four. That's right, four PvP characters. But hey, he's happy. And they ARE his slots...