My brother thought of the idea of the Jumper Titan because he thought it'd be funny to see a titan jump kick a Survey Corp's Member out of the idea. Personally I only included it to be sort of a "Opposite" to the thrower titan; one has big legs and the other one has big arms. Feces Titan was made up when I was developing the Bloated Titan, as a titan that could leave lingering damage even after the others are killed off. Sure it's a mess when you have titans knocking over buildings and eating half the town, but just imagine having to deal with massive piles of titan crap that could cause you to get sick from various diseases. It's certainly a new opponent to face, that's for sure.

As for the Banshee Titan, I sort of imagined that's the first mission we get sent on; we get word that there's a Banshee Titan a few clicks away and we get sent to kill it before it decides to get close to the city. I'd put the Banshee Titan up with the Colossus Titan for the amount of damage and threat level. Unlike the Colossus Titan however, it can do more than just break a door.