Eclim is already fairly useful for Ruby developers. I use it for the "stellar omnifuncs" it provides YouCompleteMe as described in the official docs [0].
Alas, our connection Eclipse is only a legal one. We are an Eclipse Foundation project, but not directly related to the IDE. So won't have any impact on eclim. Sorry!
[0] https://github.com/Valloric/YouCompleteMe#semantic-completio...