In general all subclasses can work great for representing specializations, the only problem is their fixed starting level, even more in the case of domains since they have to be chosen at 1st level. So they are really not very good to represent an "elite/prestige" group... if the Mystra's Dweomerkeeper are supposed to be an elite group that only the best can enter, then using a domain to represent it means that you enter it at 1st level, so you must be a 'chosen' since the start, but it can't happen later on in the campaign, and it can't be based on story requirements...
That drove you to Pathfinder? The 3.5 continuation with all the 'Ultimate ______' books?Pretty much like all previous editions, I won't use them. Same goes with "Advanced" books and other optional chunks of players options, each more specific than the last. This drove me Pathfinder, and it will drive me from 5e as well.
I'm surprised anyone else liked the idea of the ur-Priest, at all. I could see a Warlock Pact that radically changed your spells list (which Pacts don't normally do) to mostly spells shared with divine casters as an ur-Priest. But PrC makes more sense - you don't go stealing magic from the gods lightly.I totally agree on this one. It's actually really hard to represent with the existing classes. Warlock is probably the closest match, and it's pretty far off.
Defiler and blighter sound similar in that sense. I suppose the blighter could be open to Druids, Rangers, Clerics (Nature Domain) and Oath of Ancients Paladins?I can think of a couple that qualify. I'd like to see an alienist, a defiler, a green star adept, and a cavalier, for instance; I think all of those could be used across a wide swath of classes. The blighter is a tricky one, as it's totally druid-focused but anti-druidic. I'm not sure how to handle that one.
That drove you to Pathfinder? The 3.5 continuation with all the 'Ultimate ______' books?
I'm surprised anyone else liked the idea of the ur-Priest, at all. I could see a Warlock Pact that radically changed your spells list (which Pacts don't normally do) to mostly spells shared with divine casters as an ur-Priest. But PrC makes more sense - you don't go stealing magic from the gods lightly.
Not exactly a god, but fair enough.True, but then again, stealing magic from the gods is right there in the PHB Warlock goo fluff. "The Great Old One might be unaware of your existence or entirely indifferent to you, but the secrets you have learned allow you to draw your magic from it."
I'm surprised anyone else liked the idea of the ur-Priest, at all.