Here are my ideas if youre interested

-faery swamp

-cursed corridors (the challenge area)

-castle

-town (includes streets, pub and graveyard)

-desert (includes dunes, oasis and tomb)

umm thats all I can think of right now you could use them in a more permanent mystery dungeon style game

-Alter

I have three areas that could go together to form a new campaign. Or likely be adjusted to fit in to existing campaigns as needed.

1 – Forest setting

This would be one large map. Fill it full of various animals like wolves and bears. No doors but plenty of dead ends (fallen trees that block areas off).

2 – Tomb/Cemetary

Undead galore! Maybe a couple of new monsters here. Mummy and Skeleton Knight perhaps?

3 – Dragon Cave

Make the look of it somewhat like Endlesss Mode. Maybe add in a few newer monsters. The end boss would be a huge Dragon. Have him fill the top of the screen basically. Every three to four turns he shoots out a large blast of flame breath. But since the dragon is fairly slow you would be able to plan around it. If you are trapped in a fight with the henchmen/nuisance monsters and get caught in the flames  .. well, there's always next game.

A new campaign would be nice. We have plenty of different characters to play but having a different sceanrio to run them through would be great.