I find it interesting that it wasn’t requested, perhaps it’s such a basic request and the testers back then were looking for shiny features.
For me I think you should look at things like this in a different light, it may not be a fancy feature but for someone out there it will be a stumbling block that will turn them off a product. It’s always the little things that are stumbling blocks, like it took 4 clicks instead of 2 or the ui is just not quite right, there is too little screen real estate, I can’t see my images so easily at a glance, etc etc things that slow us up and being a distraction. Learning curve is a biggie, is your product too hard compared to the competitor who has had more time to fine tune things.
For these sort of things a roadmap won’t necessarily help to gather data, it’s real world users experience; are they humming along at a pace or are they being held up by the little things.
So I would place this under Fine Tuning, just like an artist goes over his image seeking perfection, but you have to be quick about it.