I'd like to think that this is a Call to Arms, but I realise it could also be seen as an unreasonable whinge, and possibly in the wrong forum. But I'd like to stick the thought in people's heads and see if anyone's interested.
I've been looking in the Plugins Repository for a good mapping & geocoding plugin – there are several, they all excel at different things and most lack comprehensive documentation. So why not get together and create a framework for maps?
Think about it; you create a well-documented, lightweight, base plugin which allows you to do the 'simple' things, like insert a single-marker map (Google, OSM, whatever), mashup markers from different posts, create a library, work with CPTs and similar using modern coding standards. You make that framework extensible so that other developers can add plugins that allow you to display markers Facebook-stylee, import KML files, multiple maps with multiple markers, customisable info balloons, height & elevation and suchlike.
And document it!
I wouldn't know where to start from a coding perspective, but I'm willing to work on the spec – and that all-important documentation. We have theme frameworks, and things like NextGen for galleries – why not a mapping / geocoding one?
What does the panel think? Anyone up for it?