Welcome to the future of gaming entertainment. It's a shame that the industry has so quickly got to where Hollywood is now - high cost, low risk ventures that try and repeat a winning formula until it won't hold water, then desperately cast about for a new formula to last another few years.
It's understandable in terms of the high cost of big games, and the risks of failure, but it's the sad side of high commercialism over creativity in the entertainment industry.
Also, so long as masses flock to but something like MW2 - which really felt like a even more frenetic repeat of the previous title - things aren't going to change anytime soon.
The problem is particularly an issue on consoles, which are closed environments. On PC I can download lots of new, freely made L4D campaigns - but on 360, I'd have to pay to get a two level expansion campaign (not just picking on 360 BTW, PS3 has same issues with other titles).
Joe Public always has the casting vote with their wallets, but looking at the sales for most popular franchise expansions I'd say for the moment they've voted for more of the same please.
Try to be reasonable... its easier than you think...
