: Presumably, he cares because Requiem is a resource, and the Didact can
: reasonably assume that he can purge the intruders without destroying the
: whole installation. Besides, for all we know, that's where the Prometheans
: (ugh) being created by the Composer (yuck) are being mustered.

: The floor in a tower (Not a random one, because Cortana sent you to those
: towers because they could prevent the Didact from leaving) can be dropped,
: but the actual infrastructure probably can't. Time to go platforming!

I doubt that.

: No. No quick-time events.
: I do notice that Halo 4 was lacking in decent vehicle sections, though.

Halo 4 has plenty of vehicle sections and I thought all of them except maybe one or two were decent-- maybe not great, but decent. Anyway if you were taking down some big guns it would probably be a lot of fighting to get where you need to get to and then you'd shoot something, push a button somewhere, or push a button on the controller to put Cortana in something and have her do it for you.