My point though is that appear to have leapt to the assumption that D&D is a "tolkien-esque universe" and therefore the Tumble skill feels out of place to you.
I said that D&D has a Tolkien-esque universe because that's where D&D's roots lay.
D&D can be run/played a variety of ways.
Absolutley agree. Especially with the d20 (3.0 and 3.5) system. It can be grim and gritty or super heroric. Simulationist or abstract. The system is very flexible for different types of play.
Tumble fits the assumptions of the D&D rules and the "implied setting" of the game; it's not Braveheart, it's not Conan, it's not Fafhrd & Grey Mouser, it's not Elric, and it's not 300 or Prince of Persia either.
Not sure I agree with you here. I do think there is an implied setting with D&D, and it is Tolkien-esque. Different races. Serious Elves. Grumpy Dwarves. Light-hearted Halflings. Goblins and Orcs. Mages.
The "roots" of D&D are very much Tolkien-esque. If you want to play "Braveheart" or "Conan" or "Elric" or "Fafhrd & The Grey Mouser", you've got to make some adjustments.
So for example, you can run a political-focused game in 3.x, despite the fact that it's got really poor support for anything other than killing things and taking their stuff.
Just FYI, the Conan game has an entire supplement (that Mongoose released for free!) that focuses on nothing but a politically-based game.
If it's a problem, just remove the skill.
I don't think that's necessary. I'm already thinking of the players encountering some naked Amazons, or maybe some savage backwards Picts that are masters of the tumble. They use spears that are designed to be used with the Tumble, and they wear nothing but a cloth over their groins held by a hemp rope at their waists.
My "problem" with Tumble is that it seems to be a bit "specialized" when most of the skills are quite broad.
I like opening up things for discussion and seeing what others say, too.