For 7, 14 & 15) I am "working" in the idea of a bigger change related. My personal view is:
- Feel like Playing track in a tab is near a duplicity of theater mode in a window.
- Playing track in a tab is way different than Playing track at the bottom. Both have same links, but feel the one at the bottom more convenient for "internet services" and last.fm plugin than for full web links.
-For web links used in the the PT in a tab, feel it more convenient directly opening then in a tab. So its easier to copy or edit the current address, more consistent with a browser, and has more vertical space.
Edit: Added mockups ====================
So with that in mind, the idea by now is:
Playing track at the bottom:
-Leaving the button in the status bar only for showing the playing track at the bottom, being always visible.
-If opening this panel causes incompatibilities with an opened playing track in a tab in background, then close the PT in a tab.
-In PT at the bottom removing the web links by default (leaving the possibility for adding them) and using only web services or plugins intended for a narrow and wide panel.

PT in a tab:
-For simplicity fusing Theater mode and Playing track in a tab
-Hability to switching to full screen, the same hotkeys than in TM in a window.
-Removing the bar with links in PT in a tab

Browsing panel:
-Rename library\bookmarks to library\audio bookmarks
-As playing track in a tab opens in a tab, add an entry to the left browsing panel. If opening it causes incompatibilities to the PT at the bottom then collapse this last one, keeping its button at the bottom.
-Move the web links in playing track, to a bookmarks folder named "Playing track links"
-Add a new folder for visualiser, being able to opening playing track in a tab or the other visualisers

I guess this can be considered a radical change, so please people comment
