Read the OP.
I want one thread, not five speculating ones.
I like the idea for the Iron tower/tunnel, but feel that we'll finally get that bug legendary type.
I hate to poke an old post, but I highly doubt a bug legendary. They have always pretty much left the bug type to the beginning of the game and not really bothered with them after the first couple of towns, with the only exception I can think of being Yanmega (even though it evolves from a beginning bug itself).
I do, however, think a solid ghost type legendary (that isn't a dragon) would be nice.
Also sorry for irrelevance to previous posts, just kinda had to throw this in here.