I love the ability to be able to click any field, drag and drop any group, check any box, etc., and apply tag changes. However there are numerous problems to this ease of change. The main one is that metadata can get changed without ever knowing it. Cases in point:
1) Sometimes when I want to play a song I will double click it. However sometimes this does not work because I didn't click right or whatever. The problem is that when this happens often times the field I clicked on to play will turn to edit mode and with the ability to then scroll and select another field name, that can be replaced in a matter of milliseconds without ever knowing this has happened. I know because I saw a song name that wasn't correct and realized that the alternate name was just below on the alphabetical list and I have also accidentally caught myself doing this as well.
2) Sometimes in the year pane view, I will accidentally drag a year instead of scrolling to highlight several years, and then accidentally drop that year into an alternate year. This happens partially because the year pane is smaller than normal with MC11's auto pane sizing. Combine that with tagging mode check boxes and it makes it even more difficult to highlight and easier to accidentally drag and drop a field which will overwrite all of the year tags for those files which is really bad and I didn't realize I had done this until I messed up a bunch of fields.
3) Just recently I was right clicking on a group of highlighted songs and I accidentally hit the top command in the menu which happened to be at the time, paste cover art from clipboard which of course replaced about 85 different songs worth of cover art.
The one constant in all of these scenarios is that there was never any mechanism that said do you want to do this or would you like to enable tagging mode or your selection in the tagging options does not allow you to do this or something to that affect.
I have tried to use Party Mode for general browsing, which is a great idea however it has problems as well such as resetting my view schemes to default when I revert back, so I won't be using that feature again.
Overall I have learned to use MC and avoid these tagging mistakes however what happens when friends come over to use it. Your library is going to get messed up by them on accident. I love MC and will continue to use it, however I am always worried and looking out for irregularities in my library because of how easy it is to change metadata in MC.
What does everyone else think?