Sometimes flashing custom kernel may break root, then you should reflash SuperSu, i did it and bbs works fine for me on Omni rom. Supersu zip you'll find here http://forum.xda-developers.com/showthread.php?t=1538053
Thanks @Doublemark, finally I have root for WSM, but Ican't install Mi-Tools.
Another problem is I can't set Nova as default launcher.
Anyway, @Wajk thanks a lot for your great job!
I haven't permission too, you need 10 post at least if you want write something ;)
I don't use the screencast/wifi display functions, so I can't tell you. The best feature of this ROM is OmniSwitch, for me of course ;)