I thought that too and I think BP mentioned it up there somewhere.
Certainly possible, the multiverse plugin has an inventory addon I can sort.
Also, the Spawn point issue is due to Dynmap taking the spawn point location from the server itself but the place you actually spawn to is defined by multiverse. Dynmap can't read from multiverse. Not sure why they're vastly different though. One work around is to move the Spawn labels from dynmap.