I'm a huge Jimmy Neutron fan! Try to include as much as you can. Just remember that, because it's a cartoon, the city changes every episode. I'm sure you can work around it though . Might I suggest using the Redpower and Computercraft mods? Redpower simplifies redstone wiring, lets you use smaller versions of any block, adds muticolored redstone lamps, and adds in conveyor belts called frame motors. Whereas Computercraft lets you use basic code to control the redstone. I may be wrong about those, but I'm pretty sure that was accurate info. I just think it'd be cool to let people use those mods to build their own inventions, and redpower's microblocks would allow you to use even more detail.
I really hope you make this! Just thinking about it makes memories of the good old days come back to my mind..
Yeah, I miss the days of Jimmy Neutron. Now all we have is the abomination known as Planet Sheen. Not to mention other networks such as CN. You have to pay extra to get the 60s-90s shows on boomerang, So until you can pay you're stuck with Adventure Time and Regular Show.