I played morrowind + expansions, but nothing before that so maybe I just lack game material to reference.
That said, I LOVE quests that branch out in a variety of ways. If beth had more of those it would have been incredible.
Becoming Hortator was a pretty bloody business. You had to kill Venim, no way around it. You probably had to kill at least a few Hlaalu, unless you had the Camonna Tong leader (a slaver and a thug) in your pocket, which I believe necessitated blackmailing him. As I recall, you could end up murdering almost every single one of the Telvanni, but even if you got all of their support, you'd still have to kill the head Telvanni guy because he would never, ever actually give you the support you needed, just put you off forever.
Nerevarine wasn't too clean either. At least one quest required you to purchase a slave to be an Ashkhan's bride (she was happy about it, but that doesn't change the fact that's what you were doing). Another required you to kill off pretty much the entire leadership of an Ashlander tribe so the timid, no-confidence son of the former Ashkhan could take over.
There was a way around all of this, of course...if you murdered Vivec and stole his ancient relic. So. Yeah.

