I like MoD as it is because of the simplicity. Destiny is already fairly 'gimmicky' ... Sardon's is the only one that really sticks out as a candidate for review, but even there they have those spiked contraptions in the spawn room, which could be seen as a gimmick.

Future towers, or locations like snow fort and york fort being replaced, should have their own charm. Some of the Boxfort iterations were fascinating. Others were terrible.