Except how do you make a job ability somehow attach to a skill level? Provoke, Sentinel, Souleater, Last Resort etc. none of them are reliant on any skill level, they're all just as potent as they are at 0 as they are at cap.

We don't even know if attaching JA to skill level is even possible, so stop asking for BST to become weak. Step down from the high horse your sitting on because I don't think you can see how low BST really is when it comes to anything relevant in today's time. Why do gimp BSTs bother you so much? You don't have to play alongside them; Dynamis is the only reason and if you only fight DC mobs you should have no issues since Perle BSTs would never touch them.