I play bard, I haven't tested pvp yet but I think only crit hit should 100% interrupt cast and we should use Silence and stun..
Maybe increase all silence effect to 2s.

The price for PVP gear is like the one we saw on AION....crazy price! No reason because PVP is not the core of the game..
We all hope in changes which can make PVP the fun part after 20 h per day of PVE.