I promise that if mastery respec is meta defining I will push very hard to add a restriction. I understand the concern here. You’re right that it is harder to take something away than it is to add it. We are confident that if some limiting factor is required that it can be done cleanly enough that it’s worth it to just go to the system we think will be the best in the long run.
@DiceDragon
In this case, that loud camp I think actually delayed this. Low quality arguments for something can have the opposite effect by making the recipient dismiss the entire idea due to some reasons being ineffective. It’s not intentional but I sometimes find myself needing to figure out why on my own.
As an aside, I see the D2 approach being recommended quite a bit but I do want to point out that once you’re into deep end game in D2, you can “essentially freely respec” all you want. I think that D2 is actually more free than LE will be (assuming that the D2R system hasn’t changed in the last year or so). All the time that it takes in D2 is to allocate your points. In LE you’ll still have to re-level your skills up. Some combination of the difference in potential power for completing specific activities and the increased maximum potential reward would need to be very high to be enticing enough to cause people to want to use mastery respec as part of the endgame meta to switch frequently. I see 3 levers that we can pull to affect the desire to “abuse” the system. We can make the reward quality across various activities more consistent (good thing to strive for anyways). We can balance the relative power between the masteries at completing different types of content (good thing to strive for anyways). Finally we can increase the friction of the respec process (which is already higher than D2).