That quest they showed and cut, which itself looked cooler than anything we actually got in Crestwood, also showed awesome combat tactics/mechanics that never made it into the game. Burning enemy vessels to keep them from escaping, for instance.
You can't deny reality.
Well, off the top of my head, I recall that the quest was timed (which itself was something people who saw it complained about, so I don't see that as a great loss, but that's a matter of personal preference). That's one. Secondly, yes, they burned enemy vessels, but that's a simple quest trigger, not a combat tactic or mechanic like you're trying to say it is. If they hadn't replaced that quest altogether, the game probably could still do that. So... that's still one. I have a pretty clear view of reality, thank you.
Actually, we were shown that. We were shown physical customization of keeps while we were told about the way keeps were meant to be specialized to serve different purposes.
What we saw were stills of what differently customized keeps could look like, and a description of what they were intended to specialize in. Beyond that, we got no details of how that system would work. We certainly didn't see the actual customization taking place in game. For all we know, that was a feature that was still totally unimplemented, and what they were describing to us was from the design document.
And what is this arbitrary "they only TOLD us about cool stuff that we never got, they never SHOWED it!" nonsense you're pushing? It's all advertising, whether audible or visual.
Actually, no, a closed presentation to a particular audience at a particular place that is never released publicly is not considered advertising, no matter whether the content is visual or descriptive, and especially not when they take great pains to explain that the content being shown is not finalized.
And despite your efforts to reframe any facts contrary to your feelings on the matter as arbitrary, the truth is that we do not know that any feature exists until it is shown to us, which is why the fact that we never saw keep customization in action matters. There's no evidence that something awesome was built and then cut from the game, except for their statement that they intended, at one time, to have it in the game.
Any accusation of "false advertising" needs to start with an actual, concrete instance of advertising before it has any basis in reality.
Anyway, thanks for proving my point. Like many others, your inability to distinguish development footage from advertising is why we can't have nice things.