I appreciate that you are trying to convince me. But I run a Coriolis campaign for 3.5 years now, with a heavy focus on the social aspect of the setting, and the system has only one skill – Manipulation – for all those aspects. And you know what? It runs perfectly well and we are not missing any extra skills. Also, it’s not always the same person who has to face every social problem; it depends on the context. Sure, there is one member of the crew with the highest skill, but they are not always around and they are not the captain, and some NPCs refuse to speak with anybody than the captain.I do like the current official skill list very much, with Bluff, Persuasion and Bartering, and I will try to convince you to do so as well!
The reason is that different characters can specialize in different aspects of communication. If you only have one skill - Persuasion - you will solve every social problem with the same guy.
On the other hand, Dragonbane has no problem that most likely only one person can use magic to solve problems, and not everyone is a highly skilled fighter. So I don't see many problems with one (or two) board social skills.
Also, my main problem is still that the skill list mixes broad (like performance) and very narrow (like bartering) skills randomly. This is my issue. I think they can easily come up with a skill list that is (a bit ) longer than beta v1, but more balanced and well-thought than beta v2.