If you haven't checked out Voracity Solutions you should do it now. You already know the guys at Voracity Solutions as Jon Edmiston and David Turner the original creators of what has become Arena ChMS. Among various long term plans and projects, they've started cooking up custom modules and solutions for Arena.
A few weeks ago I got an early glimpse of an Arena module installer/control panel they worked on, but now they have a public demo in their latest blog post. (I'd recommend subscribing to their blog to get the latest tidbits and news.) Although such a mechanism was discussed some time ago, Jon and David finally had a serious need to make it happen.
It's called the Voracity Installer and it has the potential to make installing your custom Arena modules a snap (literally a one click operation). I say potentially because they’re wondering if other Arena community developers are interested in using it – so if you are interested, let them know by dropping your comment/reply on that post. If they publish their package file specification we'll almost certainly adopt it for use in all our module packages.