I'm wondering if these aren't too high, particularly on skills. Even if the game is meant to either operate in a vacuum or was to be the 'new base' from which the other 40k settings will be recalculated, I'm thinking the Skill and Talent costs are a little bit out there.
I believe its already been pointed out that the game appears to use 25+2d10 as the assumption for everything EXCEPT rolling up PCs; whether we're talking about Ogryn sub-squig intelligence or all those NPC guardsmen having rolled fifteen or higher on most of their stats, but here I'm thinking 'upgrades'.
Supposedly, an average session of 4 hours should net you around 400xp. As far as having two aptitudes shared with anything goes, that's pretty fitting. But if you have only one? Getting +10 in a skill, even a common lore, is gonna net you 600xp. A session and a half, not to mention you've spent a total of 900xp on this. Getting to +20 is a total of 1800xp. If you have no shared aptitudes? This isn't an "elite advance" anymore, its 3000xp.
Even Talents: We're talking 1600xp; four sessions, to get Mighty Shot, Lasgun Barrage or several others.
Anyone else thinking perhaps the multipliers need to be lowered a little? I could easily see this being lowered to x2/x3 on skills, and x1.5/x2.5 for Talents; a Sergeant wanting not to risk his buddies with his pistol at 'pistol' ranges would already be putting out 2000xp for the prerequisites, and that's if [a big if] he actually rolled 20 on ballistic skill. Most likely its 3750 or 6250.