Kansas City (which is not in Kansas btw), is better for a "not in my back yard" syndrom of a bigger city, as well as a more central area in the US and North America. Problem in Alaska? The extra few hours could be crucial, and this, being the UN, you need to worry about Canada and Mexico too at least once this becomes simply one office of several. Same with Eddinburough over London, thogh it's still in the UK, mostly for the simplicity of keeping it in an English speaking country (for now) for the players.
I like having someone setting up the second facility, but Seth Sharpman is an administrator and politician, albeit with altruistic ideals, so he's more an organizer behind the scenes than a leader of any kind in the task force. The PCs should likely never have to deal with him other than perhaps occasionaly provide reports to him so he can spin PR, file insurance claims, and settle lawsuits.
The 2002 timeline only speaks of people with abnormal abilities starting to show up, and is quickly turned down. All this means is that some scientist found something and sent it all the way up to Seth's and the Major's attention, but, with out adiquite exposure to the public, nor any solid research, it is waved off to a sub-comittee in hopes that it will eventualy be forgotten. It's more a sign of foresight of Seth and the Major, to help explain how they could move so fast in the UN juggernaught.
I think Colors work better, now that I think about it, and Keia just brought up the reason why. However, I like the teams or peoples being termed the "Resolutes" by the media. It gives the public a term that's not always the official one, and probably doesn't take away a particularly exciting name from a player.
Note, Granite got renamed Rocky in mine, so Granite can be saved for a player
BTW, I officaly reserve "Purple Haze" for a super hero name (Long story, will explain in a character background)