Roahin: The Tristian thing is a bit more poignant for me because of a recent issue with a main character build I was trying (and failing) at.
I'm a huge fan of Asmodeus and since Tieflings were released, I'd been wanting to do something with him. The problem is that a Devil-Spawn Tiefling is so goddamn backwards. The +2 Constitution and +2 Wisdom seem like they'd lend themselves to a martial Cleric like a Crusader pretty well. But the fact that they had that huge glaring caveat "If you take a Sorcerer or Eldritch Scion level, you bypass the -2 Charisma penalty!" on them weighed on me to the point where I couldn't NOT take a level. I mean, no other Tiefling bloodline includes a way to offset their racial penalty. Yet, neither Sorcerer nor Eldritch Scion particularly benefits from Constitution or Wisdom though. And neither one are good multiclassers with a martial Cleric.
So, fine. I went straight Sorcerer. Asmodeus is a fire God, and me being a Lawful Evil Devil-Spawn that spams fire everywhere is the next best thing to actually being a Cleric to him. But I noticed pretty quickly that his spells were running out rapidly. By around level 10, I'd noticed that I'd be on empty and spamming cantrip rays without full-clearing a map while Tristian, despite lacking my masculine 5th level spells, had far out-damaged me and was still spamming more spells with plenty yet in reserve. About the time I was halfway through Varnhold Vanishing, I got frustrated and deleted the character. See, I couldn't even imitate Tristian and go Theurge myself. The Devil-Spawn Sorcerer thing only works with classic Sorcerers, not Empyreal ones.
So, having had Tristian's MT build actively playing alongside a pure damage spamming Sorcerer and realizing that the MT completely and thoroughly blew it out of the water, colored my opinions strongly.
think you can do draconic sorc(with DD levels) with the devil-spawn, no? get like 14 cha(12 with a malus) to cast buffs and stuff(+items), Take a traditional monk level to make use of wis... might be bit rough at the start, but it should work ok-ish, no? buff up and use beast/dragon forms to fight. And being MAD won;t hurt you as bad cause you don't care too much about the casting stat
but I do agree most thiefling subs are really backwards. And they don't get a racial either.