I've been using MC17-MC21 (+ licensed for MC22) and hoping this would have been added by now, but would be thrilled if it made it into MC22:
Adding subtitle option on top menu so that I don't have to drill down through sub-menus to get to it. It's the option I find myself using more than anything else during a movie that's under the Player menu. It would be so user friendly if it was on top, especially if it was just an on/off function since the subtitle language preferences are already available under Video options. Not sure, but it seems like an easy feature to add. I'd settle for two CTRL-<key> combos, but both methods would be even better!
Sorry if anyone has asked for this before or I've overlooked an easier way to turn subs on and off during playback of a movie, but as AFAIK, drilling down menus is the only way I know how to do it.
And since the Competitive Disadvantages thread is closed, I'll simply add my vote for improved UI (like this request). I'm really grateful for the terrific audiophile features, but I mainly use MC in my home theater on my HTPC to list all my contents on my RAID and then watch movies. With the auto resolution change feature and madVR, it's one of the simplest and best for this. However, it seems like the UI interface for watching/controlling movies gets very little attention. So, as the majority of folks have indicated there, the UI could use some improvements. Anything to make it even more user friendly during movie playback would be great. Thanks!