Where's the line for superfluous graphics. God, I'm sure glad I haven't explained that about 5 times in this thread and you still don't get it. Ok. I'll do it once more. Madden. Cheerleaders on the sidelines, fully rendered and given AI. Ok. I'll let you fail to understand that again. There's more examples but I don't need to churn them out.
I like how you completely missed the ASCII characters thing by bringing up one example of a game that, for the most part, was developed with graphical limitations in mind.
ALSO, I like how you bring up Nethack, since it so perfectly illustrates my opinion to begin with.
You tell me first that graphics may or may not be superfluous, something that I'm arguing against by saying gameplay is what matters, and then you bring up Nethack. So good job destroying your entire argument.
You can't argue that there's no line and then talk about Nethack. That's like saying roster upgrades don't make a game, but then talking about how Madden is so amazingly well done year after year.
I gaurantee the differences in HD versus SD cause development times. Gaurantee it. If you honestly think it doesn't, you literally have no clue about programming. None. Increased resolution = more detail on the screen = takes more juice = computer has to know how to handle that increase versus SD = the rendering engine has to respond differently = must be programmed to do so. There's no magical switch that says HD = true, and suddenly the engine just knows what to do.
I doubt it is a huge monolithic thing to program, but it most certainly deserves to be taken into consideration. In fact, I'll ask my programmer friend, who is currently writing a 3D engine from scratch, what he has to say on the matter. And yes, I know this last paragraph looks like bs and everyone and their mom has used this argument before, but I gain nothing from saying things I can't deliver on.