I think its pretty simple why the ratings don't really change much.......
Bellator doesn't give us fans a whole hell of a lot of reasons to watch.
Scott Coker and Spike need to use the roster better and schedule shows accordingly. I know I'm beating a dead horse here
but this is what Coker has always done. His orgs run very lose in the sense of direction and it hard to build off that. Fans only care when they give us something to care about. Because of this even good shows people don't tune in much more than the avg. shows. Main event ratings show that people will tune in when you give them a good match or a quality name. So build off that.