Parmandur
Book-Friend, he/him
It depends on what you mean by "want." Lack of enthusiasm is about as bad as active dislike for a game product.It would not, however, be accurate to say (absent additional evidence) that the community didn't want Mechanic X.
Everything about UA and how WotC responds to the feedback if one interprets the 70% threshold as being a median result of pushing the top button in the aurvey: if as many people put a 4 or 5 (depending on which scale theybare using) as pit the lower options combined...it's in. If more people don't pick the top option, it's out. If that is what WotC is doing, then everything about what we see in UA and final products makes sense.