Haha, great ideas, Benvolio and Roobar! I'd especially like to see that bouncy pogo idea get used in a mod someday; perhaps the pogo in-game can be modified to jump higher (but not like all the way up to the sky). Maybe you need to use up a replacement for ammunition to bounce higher with the pogo. The goal would be to find something that gives the pogo LOTS and LOTS and LOTS of energy!
If someone ever does a mod like that Mario video Benvolio posted, though, then oh boy... I can just imagine Mangling Machine arms, Meeps, and laser shots from everywhere, all with that pink house background.

It'd be interesting to see a video of someone completing that kind of mod.