My only concerns is exactly where Nokia is directing it's fleet? I've been a loyal N-gager for 4 years here in the U.S. and I've been waiting patiently with since the announcement of the Platform for something to come down the pike so I can get on board, but there seems to be next to no support for N-gage here in the states
Well, first of all NO ONE has had next gen N-Gage for very long. It was delayed time after time after time since its initial announcement way back in 2005, it didn't actually launch anywhere until 2008, everyone had to wait. The first app version was made available in Spring of 2008, with the first phones to have it built in only appearing late last year. A lot of people are only just seeing compatible devices appearing in the shops now, it's still very much in its infancy.
Regarding the US though, the problem is the low sales of Nokia phones in America. It's by far their worst-selling territory. Literally everywhere else in the world Nokia have had very healthy sales and growth, which is why they're the world's biggest phone maker, but for various reasons the US sales of Nokia phones remain stubbornly low. The problem is made even worse by US networks trying to restrict the choice of handsets offered to consumers. European phone shops have a much wider range of models from all manufacturers, whereas US consumers are restricted to just a fraction of the models available.
Interestingly many US software platforms such as Palm and Windows Mobile have exactly the opposite problem to Nokia: high sales in the US but disappointing sales elsewhere. Even Apple's iPhone has seen an enormous difference between American sales and non-American sales. I suspect there's some massive gulf between what US and non-US phone users want, which is dividing the mobile world into two.
Many have made the point that US smartphone users want a computer first and a phone second, while European and Asian smartphone users want a phone first and a computer second. That's certainly how Nokia's touchscreen 5800 seems to me, they've made it narrow enough to operate with one hand which is a phone-centric thing to do, whereas US smartphones tend to have wider screens that require two hands to operate.
(One interesting footnote: Nokia's computer-like internet tablet series (770, N800, N810) has had virtually no sales in Europe or Asia, but has a cult following in America. It's the only Nokia product that isn't a phone, and it's the only Nokia product that sells better in the US than outside, which sort of confirms that Americans tend to be more computer-centric than phone-centric.)
Nokia does advertising, but I've seen nothing in regards to N-gage
Well, this generation there's not much point in advertising N-Gage because it's not the selling point of the devices that support it.
The idea is that the phones sell well as phones, and then N-Gage gets into people's pockets that way like a sort of trojan horse. It's meant to become like stereo sound on television sets, or Flash support on web browsers, something that isn't advertised in itself but which lots of people use because of its ubiquity.
(none of the devices I've seen so far are even offered by AT&T)
You do realise you don't have to buy a phone from a phone network operator?
Phones are available unlocked, and because they're unlocked you can sell them on when you want to upgrade to a new model. It also means you can switch networks more easily, and use foreign SIM cards when travelling overseas to avoid roaming charges.
Nokia USA has its own shop selling unlocked phones ( http://www.nokiausa.com/buy-online ) and Dell USA also sells unlocked Nokia models including N-Gage-compatible ones:
http://accessories.us.dell.com/sna/category.aspx?c=us&category_id=6941&ck=anav&cs=04&l=en&s=bsd&~ck=anav&nf=63866~0~1195874&navla=63866~0~1195874