Certainly different configurations will increase test costs but other than that I don't see any concerns by "the industry" in the strict meaning which doesn't include consumers. Even for different configurations, there have been different PS/PS2 models with a bit different hardwares in fact...Patching hell, variable hardware configurations, incompatibilities with older titles, etc. Anything that might taint "pure" console gaming, I suppose. None of them did I care about, but then again, I'm a PC gamer and that stuff doesn't scare me.