First post!
I had an idea a little while ago, can't find any pictures I drew, but it was the Penguin's submarine. It was bigger than it was in the old Batman line, and it took some inspiration from the submarine in the 1966 Batman movie with Adam West. It had Batman, Nightwing, the Penguin, Killer Croc, Deadshot and 1 Penguin Goon (dressed like a pirate), as well as maybe 3 of those little armed penguins. The left side of the submarine could be opened to see inside, and inside was a periscope, some computers, a vault and a room for the Penguin, complete with a desk and a bucket filled with fish. Batman wore a black-and-grey costume, and the Penguin took the appearance of the Arkham set's version. Deadshot looked like he did in the video game, and Killer Croc was redesigned, with more scales, a light nougat "chestplate" of sorts, a belt and ripped pants. Deadshot came with two rifles from Star Wars, and Killer Croc had some access to a huge rock (Based off of the B:TAS episode "Almost Got 'Im"). Nightwing had the current Robin's mask, but a serious face. He had the torso design, leg design and the hair from the video game/ before, as well as carrying his trademark escrima sticks. The main fight was on top, where Batman could open the hatch and dive in. There was also a small version of the Whirly-Bat (which is basically a flying seat for Batman) and Nightwing had a jetski of sorts, that turned into his motorcycle AND a hovercraft, just to allow him to keep his trademark motorcycle. The set would be about $80 in my eyes.