Just see the attached files as example.

OH HO HO!~

is that current and beyond or in next version?

Wait, so MearthRiskv1 is a map that depends on Mearth, and thus has no actual map content, but includes other content? Am I getting this right?

So for example, if somebody wants to take an existing map and bolt a farktonne of WorldBuilder stuff onto it, they could release the new object as a map-mutator and it would appear as a map in the map list?

Does SpringDownloader support auto-fetching dependencies?

Yep


Hell, you could make a mutator which depends on both worldbuilder and the actual map.

edit: MearthRiskv1 doesn't work with current SL because it scandalously assumes all mapnames has an extension (sm3 or smf). However, BrainDamage already fixed it and it will work in next version

Coolness :). Sounds like it'll make releasing smaller map changes (interim versions I guess) far less painful. Or useful for showing how you think a map might be changed.

Springlobby does with the new unitsync from next release.