Is it possible Dagon got mantled at the end of Battlespire,sure,we are told the realms we go through are merely pocket dimensions of Oblivion,but the last level,Dagon's "Hunting Lodge" seems rather different from all the other places beforehand.Infact,I do believe I saw lava with the terrain which sounds/looks alot similar to his realm in TES 4.Also,if I were Mehrunes(assuming the Hunting Lodge is the main base of his invasion)I'd want to send my lackeys to do the work in the pocket realms,and then do all the destroying once I got to Tamriel.
Also,assuming his hunting lodge is an actual hunting lodge and his primary one,I'd want it in my own realm,or atleast one where the prey will be some kind of challenge.At the end of Battlespire,it does sound like you've defeated him at every turn...so is it possible he got mantled?
What do you think?Am I onto something,or am I talking stupid?