Pretty sure the same kind of thread (if not threads) exists from iOS 7 days as well...given what the dock looks like in iOS 8 it seems like all those votes, feedback, and/or things of similar nature (unfortunately) didn't get very far, and likely won't at this point either.
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In fact, amongst others, looks like I just came across almost exactly the same kind of thread about this from iOS 7, and just realized it was posted by you too:
https://forums.macrumors.com/threads/1604541/