I've used Ruby for a few years as a part-time coder. In that time I've never ventured out to try the variety of Ruby interpreters available. For instance, I've heard of JRuby, and I have also heard it's really fast, but it just seems like it's intended for "enterprise" use-cases, rather than my day to day scenarios.
If there are all these faster Ruby interpreter variants out there, one 'evangelism' approach could simply be to make them more visible and approachable to end-users.
There's also opportunities for package maintainers to work to make these alternatives available in the various Linux/Unix distributions. I want to be able to apt-get them, rather than hunt down a PPA or build via RVM.
Is there anything else beyond speed that is holding Ruby back from greater mindshare?