In a statement to VG247, Media Molecule's Mark Healy detailed what players can expect from future DLC for LittleBigPlanet:
“A big part of what’s coming in the future expands on what’s possible in LittleBigPlanet in terms of it being a creation tool... There’s going to be lots of exciting things that make it into more of a versatile creation tool."
Hopefully, this includes rules, scripting, and other advanced features that would allow players to create things closer to custom games, rather than just levels. My biggest issue with LBP for creating levels is that it is easy to design the layout of the level and create objects, but difficult to do anything requiring complex scripting or triggers. Some of the more skilled designers have been able to get around these, but solve the issue with ridiculously complicated solutions.
Just take a look at what was required to make a calculator:
What tools would you like added to LittleBigPlanet? No date has been discussed for this DLC at this point.