I made some ckeditor extensions when making some inline editing for an app to edit html email templates. That in conjuction with ufront and erazor you could have the start to having a nice solution. The template editing, modules, etc. of the more complex cms's would still be complicated to do well though.
@Ashiq this is something I have been thinking about too, lots of small sites have zero need for being dynamic, Joomla, Wordpress, Expression engine etc are massive overkill in terms of server resources, I was thinking of a cms that spat out html, that in conjunction with nginx would be massively performant.