One other thing I just thought of regarding synonymizer vs. nested syntax ability...You don't have to lose either as long as you're running CyberSEO on your RSS pulling blogs. In fact, you will only further increase the uniqueness of your posts.
Consider this:
1 Morphing Host Blog (synonymizer off/nested syntax on) Ability to spin out more grammatically unique posts.
20+ RSS Pulling Blogs with synonymizer enabled.
See the possibilities?
What do you think cyberxxx? Something like this could be possible for the future?