My point is that DnD isn't built to do what you want it to. So if you want to use it for your preferred style of game you'll need to make mechanical changes.
See, that's looking through narrow DnD glasses at the very adaptable d20 system. Look around. There are plenty of d20 games, from the fantastic to the grim and gritty, all using the same basic system, albeit with different assumptions on some rules and mechanics tweaks here and there.
Water Bob, you are saying the exact same thing pneumatik is. He said if you want that feel from D&D you'll need to change some things. You then say it can do all types of games.... if you change some things.
Do you consider d20 Traveller, d20 Star Wars, d20 Blue Planet, d20 Fading Suns, d20 Conan, d20 Black Company, d20 Thieves World, d20 Spy Craft...etc...as different games or all version of the same game?
I recognize that each are a version of the same game, and the d20 is quite capable of returning whatever results you are looking for, from the abstract game to the historic simulation, from the high fantasy setting to the dark, grim, and gritty reality-based games.
Actually those are all different games. To base the assumption that something is the same because they share a core mechanic (d20) is incorrect. That's like saying Monopoly and WEG Star Wars are the same because they both use d6s. Does not compute. Lawn mowers and cars use internal combustion, but they are not the same either.