Sure, none of it is terribly informative of how the final product will look and play, but it's still so early in the development process I'd bet they can't even answer those questions yet except in vague terms, and those subject to massive change.
There are people who show their games and development process more or less openly (EA or YouTube) and to be honest this convinces me more than what CDPR does with TW3, releasing teasers or E3 videos and interviews. Because teasers aren't showing how the game is being made, what the game really is and how it plays once you're running it on your own PC. That's why I don't think "it's early development" is convincing argument not to show something anymore. It's just policy (and their right at the same time) how they make games.
I watched video with some combat - something of interest to me that I could evaluate - and I didn't feel combat in TW3 to be interesting enough, despite claims. Maybe I need to watch more than combat on easy difficulty, but it's up to CDPR to disclose more videos about specific gameplay mechanics. To be frank TW3 isn't even on my to-buy list (big question mark hovers above it), while games like LT made it to convince me in a very short period of time after getting to know them. LT is also supposed to have a demo for those who want to try it before committing to buying game. All this despite a lot of YouTube development videos, dev logs on forums and detailed descriptions what game is supposed to offer. CDPR is the friendliest big developer out there I know of, but they has been outclassed by a one man, who isn't wasting his energy to make teasers to build hype around his game.
My point is this teaser doesn't even look like it's part of the game. It might be showing people what game is supposed to look like and give some clues to those who know the setting, but just as in great cinematics in TW3's teaser - there is no substance. Because we won't play the game with cinematic-like graphic. Ultimately we will play
outside of Hollywood-like style of teasers and this is my biggest objection. We aren't playing a movie. We don't even want a movie. We want a game.
I have CP77 on my list, because I am interested in their promises and know that they do make good games. In short, I have hope and they hold promise (even with all my skepticism). However, I am not going to make a blind buy on teasers, fame, convictions or promises alone. I am waiting for them to show that what they cook is really good and suits my taste. Then I will buy it for full price and won't regret it.