Trying it out a little so far.
My only real thing so far is that it would be nice to have a web interface that doesn't require installing anything on any device. Something that runs in the browser without needing to download maps first. But that would probably have to run quite differently than the app, so it might be well outside the scope of this project, at least for now.
(Windows and Mac OS versions would also be nice to have, and seems like porting them shouldn't be too hard if you just half-ass it by using the Linux version with a compatibility layer. But, again, yeah... If development resources are scarce, I can definitely understand skipping those.)