I modded the softbuttons on the chinese leak and really liked it.
Especially the taskswitch button.
But overall it just takes screen real estate (not that we don't have enough) and stuff gets scaled down weirdly sometimes.
My opinion: On-screen softbuttons are very cool, but I'm sticking to the capacitive buttons.
Maybe we could make a flashable zip of the framework-res.apk containing the mod? So you can turn it on or off to your liking.
Keep up the good work! Looking forward to the bugfixes
Nexus 4 16GB
Nexus 7 32GB