I think they need to come up with a drastic business plan.
L4D2 is cool and all, but it is not recieved well by those who bought L4D1. They need to:
-Sell L4D2 as a full game with L4D1 maps/characters ($50)
-And also offer an expansion pack for those who have it ($20)
Once that happens, they don’t have to worry about updating the old L4D as much as they do currently, what with all these babies crying about it.