Aerospace wasn't as ambitious as you idealised, SonicJohn. But perhaps, Aerospace is Bungie's way of gaining knowledge and experience of the smartphone games market. With that experience and knowledge, and their experience in Xbox and PC, which they have already, and their hiring of lots of PS3 devs, then potentially their next project, the big action universe, COULD be multi-platform, in terms of everyone playing it together. Who knows.