You want to develop balancing rules, which is a bad idea imo for the reasons I stated in the last post.
The only rules that need to be developed right now are rules for how the procedure of a duel goes, how a match counts score, obv no gear swaps of any single slot unless between rounds.
This is a rock/paper/scissor type pvp game, if you don't include that element it just doesn't work.
Develop rules for how the matches go, not rules for items/skills, then let people play the league out and from there start making balance changes.
I don't understand why you would try to tweak the game's balance when no one has even seen the game at it's full potential for all classes yet at max'd out gear.
Leave it the way it is, let people try and figure out specs/setups that work and don't work and if there are problems in the matchups, it'll show itself in the matches.
I know a few of you guys since beginning of PTR and although I love the ideal of a league, I don't agree with the rules and the issues with dueling I addressed near the beginning/middle of this thread are not really dealt with.