Upload manager systray icon looks huge.
The ms fonts package is broken in Xenial, I imported a newer one from Debian and it doesn't use debconf. You can test debconf with Steam though.
The power manager shows a battery icon even for people without batteries, so it's disabled by default.
on test #43b I installed Microsoft fonts and it never showed me the debconf question
on test #106 I see a bluetooth icon but not a battery icon on taskbar in live mode