Problems and Suggestions
For the most part, I still use 1.3, but do have 2.0 installed on another computer. It's ok.
Problems
When you take a screenshot, it doesn't tell you where the photo saved, and if I wanted make a video score, I wouldn't be able to. With that being the case, you should be able to chose a folder for them to go in.
Suggestions
We should actually be able to hear the "Articulations and Ornaments" and "Glissando and Arpegios". If I put an accent on a note, I want to hear that accent in the playback. If I put a glissando from one note to another, it would be nice to actually hear it in the playback.
Comments
When you take a screenshot, the file dialog that comes up tells you what folder it is in and allows you to navigate to other folders if you prefer. This works the same as the ordinary save operation in this or any other program.
As for playback, do keep in mind MuseScore is primarily a notation program. It does support playback, but that is not its main function, so the capabilities are limited while the developers focus on the more core functions. I think you will find a numebr of markings *do* playback, including several of the articulations, also tremolo, dynamics, etc. But not all of them, indeed. Doubtless, support will gradually be added for more.