I removed the Search Integration because at the time there was no option to index all the content based on roles.

I don't know if that is now possible. if yes i can add it back again

http://www.dnnsoftware.com/community-blog/cid/154913/integrating-with-search-introducing-modulesearchbase 

http://www.dnnsoftware.com/wiki/modulesearchbase 

There's not a specific example of the role implementation that I can find, but I know it was an integrated feature, as Evoq required it.

You'd have to raise the minimum supported version of DNN to 7.2.0 though. At this point - especially considering the somewhat recent security exploits - that should be a reasonable thing to do.