Yeah, as I get closer to the endgame, playing a sneak/small arms/energy weapons type, I realize why a melee specialist build wouldn't work. Getting mobbed by three mercenaries and a robot at close range is insta-death, because there is no specialized combat style for group melee, like there is in The Witcher (for example).

As good as the sneak skills are, they're not anything like the uber-ninja'd Rogues in D&D style games, where you can literally walk up behind an enemy without them noticing. Aggro ranges are still fairly long, whatever your sneak skills. At least at the level I'm at right now. This game wants you to use guns. The melee weapons are just a crutch for the lower levels, before you start accumulating more ammo than you can use.