Good to hear. I’ve always thought that plasma-systemsettings is hideously inconsistent. Knowing that all that stands between the new Plasma Mobile being the replacement is rewriting the interface of some KCMs provides some hope.
By the way, is the inability to darken the window beneath the dialogue box the reason why it uses those nonstandard pseudo-windows? https://invent.kde.org/plasma/plasma-mobile/uploads/2d173f9f6298c31633fa5df3080a7f5a/VID_20230214_231122.mp4 demonstrates one at 0:05 (if you don’t know what I’m referring to).