Counter-point - there's no point in iterating on a design if the initial design wasn't good in the first place. Such was the case with the QB vision game mechanic, in my opinion. Doesn't make it a gimmick, just a poor mechanic / feature.
I don't think the True Step tech is going anywhere, for the record. It's not so much a game mechanic as a piece of tech which governs how (certain) players may move. I could see the Precision Modifier being eliminated in favor of context-sensitive ballcarrier moves and/or analog sensitive controller inputs, in an effort to free up the left trigger for a different command.