I've tried reading through a few of the thread complaining about how Artificer and the new Dragon Mark make old crafting toons less worthwhile, but couldn't find an answer to my question. So here it is.
Artificer's get +1 level crafting schools at each even level. The Dragon Mark adds up to +10 levels. So a level 20 Artificer with all three marks should be level20 in all schools.
Saying they don't craft anything until they're capped, when they start crafting do they need the xp to go from 20 to 21, level 0 to 1, or 0 to 21 to level up?
Would it be better to start an Artificer, level in crafting without questing to a good spot 20 levels below what you want to make, and then cap the Artificer to pick up those last 20?
And if you have those 'bonus' 20 levels will you even get XP for crafting lvl1 or 2 shards?