Hi,
Currently, MobileFrontend has lots of features intended for WMF use only: code relying on database name consisting of project and language, Wikipedia logos all around, code that adds ® on enwiki and so on. This goes against our aims of MobileFrontend integration with core MediaWiki and making our mobile code useable by everyone. Thus, I propose to factor out everything WMF-specific into a separate extension.
We need to invent a name for this extension. WikimediaMobile is already taken:)
Also, please let me know if there are more WMFisms that I've missed.