I'm worried about the number of players in more obscure areas, like on the west coast of the U.S. or Australia. Whenever I try and find a game theres usually only like 2 or 3 filled servers
I'm in Hong Kong, which makes picking servers tricky. At peak time, there's usually one full server JP-HOHEI-SEN, and sometimes a second server <50% full.
The frustration is that because there's such a small population, spread out across HK, Singapore, China, Korea, Taiwan, Japan, etc - server pings are generally crap. The most popular servers for me are either in Japan or Korea, which results in me with a 100+ ping most of the time.
It also makes communication really hard, as you have players who speak either Japanese, Korean, Cantonese, English, Mandarin, etc.
Having said all that, the Asian playerbase is pretty damn good. I have high hopes for when the SDK is released, and there's the option for bolts-only servers, new maps, etc. That's when RO2 will take off again, provided there's good advertising for it.