With the Episode+Act structure adding an additional row of 5 perks each with the release of Act 2 and 3, keeping us limited to just 12 active artifact perks in total is feels unnecessarily stingy.
Now I'm not suggesting letting us grind unlimited artifact perks until we have literally every perk in the artifact active at once, but like, surely giving us access to +1 additional perk point per Act for a total of 14 points during Act 3 wouldn't break the game..