1. i have changed many times. Currently in Destro i am running 5 different traits. and doing pretty well for myself.
2. i have changed a fair few times! On queens court and Orgo i swapped to 2 specific traits 2 each then 2 other traits just for the 1 buff.
3. Even then i also changed alot when i played demo, implosion, bareful, demonic meteor, supreme commander
4. how often do you change your teir sets in an expansion? oh wait once per raid teir... so 3 times in legion, 2 times in wod, 3 times in mop...
And again its funny you go over constant BIS saying "NO CHOICE ONLY BIS!" which is funny... cause i am pretty sure....
oh yeah there it is.
I rather have the choice of "hey here is like 5 options, 1-3 are BIS, do with that what you will" then "HERE IS YOUR SET, YOU WILL USE IT OR YOU WILL BE TRASH!"