Skills, traits, equipments(Runes/sigil/Amulets) should never have unlocks in sPvP. It does nothing to teach players anything you intended and all it does is make sPvP much more annoying.
Already there is a ton of traits and skills. Putting unlockables on a small few won’t do a thing to make this game easier to understand. If it must happen, you have to put unlocks on every single trait and skills to teach newer players. But that will kill the game already more than it should have to. This is like teaching a child Algebra, Geometry, Calculus all at the same time before you can teach them Addition and subtraction. It is ineffective in teaching newer players and more effective in hurting sPvP.
So stop with the unlockables. Remove the unlockables and focus more on more important sPvP stuff.

