I don't think any player would turn an Olympic medal, I mean who in their right mind wouldn't like to drape a medal around their neck just to say that they've done it. With that said, I think while an Olympic medal is really, REALLY cool to have, nad because it comes every four years only, I think I'd rather have it than a Masters title, even possibly the year ending championship, BUT it's STILL *just a novelty* item. Heck, these guys are rich enough, why not get a replica medal made, and say whoopee I've got one just like they make replica wrestling title belts for kids.
Yeah, it's cool to have, but still ultimately just a novelty in real terms.
To be honest, I think the real appeal of the Olympics to players is getting to hang out with other athletes besides just tennis players. For some of them, I read, that that's the greatest thing, just to stay in the Olympic village and not be treated like your God's gift for once, that they wouldn't dream of staying in a posh hotel like some of the other top players; that for them the thrill is in just being able to mingle and feel like a kid in summer camp again. To be honest, for me, that would be the main appeal too, to feel like I'm a part of something bigger than just my sport, but also ALL sports in general, the whole Olympic "ideal" thing.