I can't begin to imagine the nightmare that balancing a true classless, skill-based game like this for PvE & PvP would be for a small team. That would mean that either the quality of both game modes would suffer or the whole dynamic of the development team, process, etc. would need to drastically change.

I've never been that into PvP myself outside of the random dual for entertainment so I'm good with the focus remaining where it is.

As I've seen mentioned several times when this comes up, there are several high quality PvP games on the horizon to "scratch that itch" so to speak.