[eluser]lifewithryan[/eluser]
My vote is to certainly NOT include any JS framework...
I like that CI is very minimal and gets out of the way. I hate when a framework builds in someother frameworks and leave you kind of "stuck" using the framework of their choice. (Rails comes with prototype, etc...thought apparently you can change it up, but its 'bloat' in my book).
I think decisions like JS frameworks are always best left up to the developer of the app in question...perhaps JQuery is a better solution for someone, rather than prototype/scriptaculous etc...or if you have to plug your app into an existing environment where a JS standard has already been established, etc...
Just make my life easy and get out of the way...thats my kind of framework.
Again, just my 2Mhz