I can see it working. If your athletics is high, you both hold your breath longer and swim faster. So, your maximum range underwater increases as the square of your athletics, rather than linearly. No problems with that - you just fudge the numbers so it's not ridiculous at the extremes, and let the middle take care of itself.
I mean, it's not unbalancing or anything... there are always water breathing and swift-swim potions, and I usually made a water-breathing-plus-swift-swim constant-effect "water amulet" later on in my games of Morrowind, so if someone wants to take the non-magical route and just be really fit, why not let them?
Edit: I wonder if wearing armour in Oblivion will cause you problems when swimming, like it does with your spellcasting? If so, then an obvious perk for having high Athletics is to remove this penalty, allowing you to swim freely in full armour...
This post has been edited by RobRendell: Oct 21 2005, 06:29 AM
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