It's not cosmetic at all imo but rather indicative.
MLO development happens in a vacuum. The team shares no details, no roadmap, no indication of features expected or whether user requests have been addressed. Nothing. Even dev participation in this "forum" is extremely stunted - limited to select comments from tech support and cherry-picked replies from Andrey to sometimes one or two comments in thread whilst remaining "blind" to the rest.
Even in the most recent app release (Android v2) I'm pretty sure nothing was known about by the beta testers until they actually got an executable in their hands to test. Prior to that, as I understand it, the beta team had no idea what they were going to receive. They had a couple of screenshots that were posted in the public forums - as much as anyone else who reads this list.
So no, it's not cosmetic in the least. MLO is a unique tool and in much time searching I haven't found yet a tool that can replace it completely. I guess the dev team know that so there's no reason for them to take the user base seriously. I guess they don't realize that if they actually expanded the user base the android app wouldn't have to be $25 to be profitable. Or they just don't care.