When discussing the ‘whitening’ of Kryta, three things come to mind.
First is that I think the default Krytan model in GW1 might exaggerate how dark the typical Krytan was. The White Mantle show a variety of skin tones, from the quite dark Ritualists to the fairly pale Savants. It still averages out fairly dark, but I think pre-GW1 Kryta still had a sizable minority of lighter skin tones, possibly as much as one third.
Second is demographics. Most of Kryta’s population in GW1 was located to the south, in areas that were devastated by the Great Tsunami – Lion’s Arch, D’Allessio Seaboard, Riverside Province, and unknown demographics on the eastern side of the Sea of Sorrows. It’s reasonable to think that, while in GW1 basically all Krytan citizens were represented by the dark-skinned default model, the more northern and cooler areas (which is what’s left) might have had a higher proportion of lighter-skinned people.
Third is one that only recently came to me, in that lighter skin is often viewed as more attractive in preindustrial societies. Like with most fashions, it’s a sign of wealth, in that someone with lighter skin is someone who doesn’t have to work outside (the fashion for tans in Western cultures is probably explained by jobs shifting indoor after the Industrial Revolution, and the person with a tan is then the person who can afford to take time off to enjoy the sunshine – Asian countries, where industrialisation came relatively recently, still largely consider lighter skin to be more attractive, although that may be shifting). If Krytans had a similar attitude, this might have caused a shift over time – first, in that lighter-skinned people are considered more attractive partners and thus may be more likely to have children, and second, in that most Krytans are now wealthier and have more opportunity to protect themselves from the sun, resulting in lighter skin tones even if the genetics are the same. (Particularly since I remember reading at one point that genes for lighter skin tend to be more dominant over genes for darker skin (there are multiple genes involved and it isn’t a true dominance, so it’s not as simple as, say, eye colour), so an influx of lighter-skinned people might have a bigger effect than you might otherwise expect.)
Of course, whether ArenaNet actually thought of any of this (particularly the third point, which may be a bit controversial) is a different question. However, if we assume that the original population of Kryta was roughly one third Caucasian skin tones and that people of Ascalonian descent were roughly one sixth of the population after Zhaitan had finished devastating the south, then the current demographics may not be too far off.
Reverting to the original topic: Every playable race can be every playable profession (there may be some unplayable ones in lore that are available to some races and not others). Some are more popular among some races than others, though. Supposedly, in GW2’s development, they had a document listing which professions were favoured by each race, which were less favoured but still fairly common, and some which were rare enough that an NPC with that race/profession combination should have a reason why they are. To be honest, though, I don’t think they’ve been keeping to that.
To those who think Scarlet hate means she’s succeeded as a villain:
People don’t hate Scarlet like Game of Thrones fans hate Joffrey.
They hate her the way Star Wars fans hate Jar Jar Binks.
