Ideas for a mod

I am looking for an idea for a tc. Mods like adventure of square and total chaos had a good idea.

guns that shoot guns

Whoa there bud, something tells me you are biting more than you can chew. I recommend you to start small with a few maps and silly mods. 

Remember that people behind the AoS and TC are seasoned mappers with more than a decade of doom modding experience.