Biggest issue, has been for a decade. During a run-through last night, I had a theory: the wide-spread appeal of M&M is a reflection of the fact it's largely designed for a conga line. Fast resets, distraction scares (that work the best in that setting), lots of smaller rooms and quick corners. On the flip side, as impressive as Insidious is, it's hard not to get every scare ruined.