Well each to their own, of course! I personally thought that the Looker managed to really effectively capture that same way of wordlessly teaching mechanics and encouraging you to push at the boundaries of those mechanics, which is what made the Witness great for me. It does poke a lot of fun at things in the Witness like the slow animations and the philosophical audiologs, but much of that poking fun only makes sense if you honestly engaged with at least a good chunk of the original stuff in the Witness in the first place. There's definitely not as much to the Looker as there is to the Witness, but, well, it's a parody. That's to be expected. I see it as a fun and more light-hearted expansion to be played afterwards, not a competitor or replacement.