Lollipop Launcher is good if you just want the google now launcher with custom icon support. Blur launcher is ok but has some bugs, and replaces google now with integration of the developers other apps that I do not use (talon twitter client, etc).
Do a lockscreen video next. My previous favorite, Cover, appears to be kaput in terms of updates. But the new Corgi lockscreen by Feedly is incredibly useful. Microsoft, of all companies, now has two lockscreens with Next and Picturesque. Oddly, they do very little to integrate Skype, OneNote, or Xim. Go figure.