Use XTargets and you should be able to autofollow and autoassist any 2 characters with ease. would be a simple rewrite. Set merc/2nd toon as one XTarget, the main toon as another, and the main tanks target as a third XTarget. Then you can do any sort of follow/kill combo you want. Or if there were more than 1 mob on autohate, you could split kill the mobs. It's not complicated at all, i just don't have active accounts to write that out and test it.