To me it makes sense but I would like some kind of option, taxing but an option nonetheless, to be available to undo the lock if needed. For example: I was planning to lock Defender as my PVE sub and Striker as my PVP sub but maybe things shift around and enemies work differently between the two, i'd be happy to know there is an emergency option. For now, on release that is, I'll have to keep them open and use them according to situations or making them both neutral builds to be used anytime anywhere and locking both as just that.