prosfilaes
Adventurer
If I wanted to remove race bloat in a Star Trek RPG, I'd get rid of all the people in funny suits -- I'd reskin Klingons into a human warrior culture, Ferengi into merchant guild members, Vulcans into logical monks, and Romulans into a post-modern Roman empire. But this would mean killing sacred cows and inciting much trekkie rage.
You describe it as killing sacred cows, but you're not playing Star Trek then. If you want to play one of the Star Trek RPGs for a non-Star Trek setting, I'm sure no one would object.
In all fairness, I don't think D&D ever offered compelling human translations of elves, dwarves, halflings, etc. If it did, perhaps we'd know best if people really want to play elves or just want humans with the mechanical benefits of elves.
Is it that hard of a question? Yes, there's people who want the mechanical benefits of elves. There's people who play elves because they like elves. And there's people in between. Personally, I like small and large characters; you can provide whatever mechanical benefits for humans you like, but unless they're 3 feet or 10 feet tall, they're not going to scratch that need.