Nothing needs to be scrapped IMO. The battle system just needs tweaking, The wards just needed Tweaking, Retainers just needed Tweaking, Levequests just needed tweaking, and Physical leve stats just needed tweaking.

So many wanting Market wards to be scraped, the whole battle system to be scrapped, levequests to be scrapped, etc. It is all just silly. You can always go fight your way to becoming the producer of this game and make these changes yourself if you really think it all that necessary. We are fortunate that Yoshi-P even asked for our opinions.