You'll be able to use our replacement for Network Manager on the desktop
too, it just won't be the default in 10.10. But if you drop NM manually
in favour of indicator-network, you'll have a fully cleaned-up panel
(depending of course on what else you have which still uses systray, but
we're close enough to done-1.0 that it should be reasonable to run with
only indicators in 10.10 desktop).
Mark