The only trouble I see with 7500g vendor epics is that it will inevitably encourage some people to buy gold. Then again, those people are probably already buying gold anyway, so who knows if it will really make a difference.
Completely agree. I would question that they are really going in this direction. The reason for the grind requirements and BoP is to discourage both gold selling and too much "twinking". I can't imagine they'll create a third route to epics in addition to raiding/PvP.