I have looked at the code a tiny bit but not enough to figure any of this out. A few things, any of which would be great:
In the mapslayer display, where it shows xmpp/ympp as zoom level as OSM would use it. Somehow know or adapt to OSM tiles failing at too-high higher levels. Perhaps just have a max zoom per map and when there are a lot of failures set it to one more than what failed and tell the user. I am not sure, but I suspect tile download requests get queued even if they are in the queue already. Start in zoom mode. Have some option to ignore waypoint layers and zoom to track (center and zoom level). This would make viking template.viking waypoints.gpx track.gpx show me the track, which is IMHO what's wanted, since one has waypoints for all sorts of things, but usually you want to see the latest track. When displaying from cache and tiles are missing, either show blank or show a scaled version of a tile that belongs. It seems (terraserver aerials) that I get tiles in the wrong place now. Have a certain number of downloads in progress per source, so a choked up terraserver doesn't break osm viewing or vice versa. Greg (trying not to sound cranky - I am writing because one of you might say 'good idea' and have the necessary knowledge and 5 minutes)
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