I definitely like the idea of remembering ticked tracks, regardless of which view they are in.
I guess it can get confusing when you compare SELECTING tracks with TICKING (or marking) them. Selections are always temporary (but see note below), ticks or marks are always permanent.
I generally use selections to move and edit bunches of tracks/albums, and ticks/marks to modify playback (either play only ticked, and/or normalise ticked, etc). I hope that kinda makes sense.
A note on selections : I started <A HREF=http://getmusicbee.com/forum/index.php?topic=7158.0>this wishlist thread</A> a while ago regarding the behaviour of selections. The problem for me (and this is what makes me interested in a permanent marking option) is that when a bunch of tracks is selected (multiple selections, that may be contiguous or not), when a column header is clicked to re-sort the view, all but the first selected track is immediately unselected. This can be really frustrating, but given that there haven't been many suggestions to that, I can heartily second the ticking option, as long as any/all file operations (renaming, converting, rating, copying, moving, deleting, combining into playlists, etc) are able to work with ticked tracks.