Here's an idea I got from THS02: what about a line in which the figures interact with each in a more subtle way. Like THS 02 having Sideswipe's jetpack, but having that jetpack be a from an actual Sideswipe figure and only usable with Sideswipe and Prime. And the gimmick wouldn't only have figure accessories be used by certain other figures. There could be alt modes that work together, like an aircraft carrier that planes/helicopters/sea vehicles could attach to, but not actually combine with. This works in bot mode too. Take for instance a figure (we'll call him "A") with a large attached gun. He could work together with another figure (we'll call him "B") to enhance the gun. Say like adding a tripod, barrel extension, and a power generator. And these added things could be a single accessory that breaks apart, like a gun figure B has. Or more simply like having Prime's gun attach to Megatron's gun when they have to work together to defeat a greater common enemy. Or the accessories from several figures could combine to create a totally separate device like a comm station or a gun emplacement. Any thoughts?