I agree but I could see Disney removing the track (which is already in tough shape) but re-using the building for something else. I say this because the Monsters land looks quite big and if they can reuse any buildings for any purpose (ie the cars show which will probably end and the brown derby backside) I think they could and would want too.They could truly not know though as the report states.
I think it's pretty unlikely Rock is involved if it goes in Animation Courtyard. Rock is a sit down launched coaster, this is a suspended coaster.
I do think Montropolis blends better with the Grand Avenue / Commissary area but think that why touch that area when its find and animation courtyard sucks.