Lets review the precise wording from the patch notes.
So while it is possible they may remove it, we know they have made a variety of attempts to improve the system (all of which I feel have been positive changes so far). Could they keep improving it more? Yes. For example, the biggest outlier problem is the “in-and-out” pattern of specific hero bans (McCree/Widow out every other week for example) and they may attempt to work on that before going with the nuclear option.