> The thing for me is, though, that it would be great if more games came pre wrapped in some sort of emulation with all the relevant settings tweaked.
For example, http://transgaming.com/cider. Notice, though, the high-touch sales process--that's unfortunately necessary, since "relevant settings tweaked" can actually sometimes mean "relevant DLLs reimplemented by us, as part of the 'sales-engineering' process, specifically to make your software work."