Waypoint already hosts stats. Its a matter of adding fileshares and rendering. And yes, I too think that old files can stay, just not new ones
Nice to know we'll be getting 24 slots for forge maps. I pretty much gave up forging once I found I'd be stuck with my pitiful 6. I will probably transfer my old files across though, since I rather have them all in one place.
Halo is a franchise. 343 is a developer owned by MS, Bungie is a developer now fully independent of MS and partnered with Activision.