And this works well in general if the changes are 1:1.
If that mutually exclusivity isn't actually exclusive it is problematic and potentially a false choice. (play our way and benefit, or don't and self gimp)
I do think the team has also done a pretty good job where a power is removed but the functionality remains somewhere. Revive formerly in Regeneration (this patch) and Stun formerly in Energy Melee (previous patch) were incorporated somewhere into the remaining set.
@arcane@ZemX "Is there a particular change you have in mind that you perceive as breaking the rule?" The Cottage Rule is a general guideline not Law. This is not intended to be an exhaustive list, but examples. Some listed should be okay others may have over reached.
One good tell, in my opinion, on whether something is bumping into the Cottage Rule guideline is if a player is going have to respec.