In comparison, FO3 always offered all options and they were available in like 30-50% of the dialogue in comparison to 3%.
Seems they burned all good dialogue with FO3.

Just to sound Nostalgic, Morrowind really got the Speech Skill down correctly. Other than Taunt, which was just a way to murder someone without penalty, the skill really had impact in that series in every conversation.

Agree. If you threatened someone, they'd like you more temporarily, but drop below what they were at after you left conversation.
The amount of information you could get depended largely on how much they liked you. I loved that.

But taunt was amazing x) remember when i used it too make a guard mad at me so i could get his armor(Mournhold guard)

Oblivion's(and much of Morrowind's) Speechcraft system was pretty useless, since all you had to do was bribe everyone into liking you. It would've been more immersive if there were npc's who were more "lawful" and couldn't be bought off, but really, as soon as you could afford to, all you had to do was bribe. At least Skyrim just cut the BS mini-game and lets you do everything in conversation.

I agree, it's the only one of the series to get it half decent, Arena didn't have it and daggerfall's was kinda borked. Oblivion's was way too silly, bribing was too abusable and it still had little impact. My only issue with Morrowind was the tendency for the threshold to always be 70 disposition, that and it could have done with a few more ways to increase disposition - I never really used intimidate as it seemed less successful than admire. Still, I'm not saying Morrowind's system was amazing, just better than the others. On bribes MW was better because it could fail, but 1000 gold rarely did so once you started swimming in money everyone loved you.

The fallouts are good but heavily pre-scripted, not much of a dynamic element to them. NVs better than FO3 but still had the flaw of showing in advance the exact skill, I'd maybe have merged the two, saying "At least X, then percentage up to Y, then always successful" and then not shown the numbers.

Skyrim's system isn't actually bad, when they say "behind the scenes" they actually seem to be alluding to the unused potential set up by the system (e.g. The relationship data in the CK)

Well, Player Reputation along with any applicable Faction Rep went into the Speech equation too. Yes, it needed to be tweaked, but at least on each converstation, the option to use it was there and your Speech Skill and/or Mercantlile skill mattered to success, along with modifiers based on the clothing your character wore.

There was a point where the skills were not buffed up yet, and Reputation was not established, that minor changes in the character could really change speech outcomes. Outside that Sweet Spot, if any one skill was high enough, it could throw off the balance. But, that is the crux of any game, getting the mix right.

I will say that Morrowinds is the system that could have the most potential to be a speech system that worked in the game.