Yes, this is indeed a problem I have been thinking about lately, especially as the scope of the project grows. However, there are already numerous passionate users who are contributing occasionally - what I need to do is probably empower them and give them more incentive to contribute. That's why I just started an open call for collaborators and already received 30+ applications so far. I'm hoping to build a team so that it's no longer just me :)
BTW if anyone is interested, here's the application link: docs.google.com/forms/d/1SgDgKZqyivEf5xl0EOWNfs68…