We should keep in mind that these are conclusions that we are drawing from the evidence provided. In some cases all we can see is the Icon, AP cost, or Memory Slots -- the actually Bless skill could a much more powerful spell than the one we know in early access. Also, it is very possible that the puzzles in EA that require Bless have been changed to facilitate this change (either not require Bless or make Source more available).
By the way, when Swen picks Thievery and says "you know why"-- I know he meant the fact that Undead don't need lockpicks, but I kept thinking about just how stupidly strong it is in EA.