bascially The writer says how the games action focus was essentially necessary to help broaden the fan base. and cited that the developers always wanted to go bigger in terms of scope since the first game, and how to tell the story they wanted to tell, that this was inevitable.
While admitting that the newer Dead Space games weren't really for him thanks to the action focus, he said that the emphasis was "a necessary evil in order to broaden the fan base."
"I know the developers always wanted to go bigger, in terms of scope. And I've mentioned before that the universe we created was huge, with lots of elements, which simply didn't make it into the first game.
"So to get that story told, to round out the universe, it was inevitable the settings and environments would open out a bit, become a bit more epic in scale."
Without the more epic scale Johnston claims that Dead Space would likely become "pretty dull."
i was one of the guys that loved dead space 2 but thought 1 was boring and not scary. but it seems 3 barely pleases either party though (never played 3, just basing this off the real mixed reaction to the game, this thread however seems to tell a different story :P .)