I’m still sticking to Popeye as my ideal fourth-party rep; I’d rather Smash not have any fourth-parties at all, but Popeye (technically) leading to the creation of Donkey Kong gives him a greater stake in gaming history than pretty much any fourth-party character out there (aside from ET, for all the wrong reasons).
I'm opposed to James Bond because I'm opposed to non-SoT Rare content in general. Even if he isn't Microsoft property and therefore not taking away a proper Microsoft rep's chance, and Goldeneye is probably the only non-monkey-based Rare game I'd call legitimately important to gaming as a whole and not just Nintendo, let's not base a ton of content on what is ultimately a random Microsoft C-team subsidary in the grand scheme of gaming history.