Sounds good.
You seem to have tested it a bit. Do you know if any of these things from Lion (and previously) has been taken care of?
https://dl.dropbox.com/u/2096906/app_switcher_darkened_icons.m4v
This doesn't happen often and only seems to get triggered when there's quite a lot of apps running (maybe 20 or so). It's been there for me since 10.5 I think.
https://dl.dropbox.com/u/2096906/mouse_cursor_update_through_menu.m4v
Mouse cursor updates through Dock menu even if it shouldn't.
https://dl.dropbox.com/u/2096906/no_proper_cursor_update_in_textedit.m4v
Mouse cursor doesn't update properly in TextEdit.
https://dl.dropbox.com/u/2096906/unexpected_column_resize_behaviour.m4v
Double-clicking a column resize-handle in the Finder when using any of the Arrange views in Lion doesn't make the column fit the item with the longest (widest) name.
Another thing with the Arrange feature that is a bit stupid (which I really like it otherwise) is that when having a finder window sorted as list and an arrange by Date Added and typing a file name to select it, it can be that the file that gets selected shows up underneath the day label, which makes it quite hard to spot:
Image
Just a few small examples I'm curios about if they've gotten any attention. Maybe I'm just being picky, but to me it seems Apple is quite often lacking their famous attention to detail. :-/