It looks pretty good. I like that it seems very platform and hazard focused, just what I want out of my platforming games, especially Crash.
I think the art looks OK. It's serviceable. It looks better than it did when we first got glimpses of the game, but I still don't think it touches the original games' art. That said, it does look better than every single Crash Bandicoot game after Warped which is a good thing.
Gameplay wise, specifically in regards to how Crash moves, jumps, and interacts with the crates, I think it looks pretty good too. But just judging it from the video footage we've seen, it still has this kind of flimsy, "cheapness" (hard to describe, I don't want to be insulting to the devs either) to the movement/interaction.
The moving and interacting with crates in the original games was a huge reason they were so good and why they still hold up. Crash feels good to move around. His jumps are springy with just enough air time, and he lands with a nice solid heft in those original games. Same with the crates, they felt good to jump on and spin into. The sound and particle effects that played when Crash broke them also had a solid, heftiness to them that just felt good.
In many ways, the core basics of Crash (run, jump, spin, interact with crates, wumpa fruit, and enemies) felt very good and is probably the one platformer series that comes the closest to replicating Mario in that manner of nailing the core basic fundamentals.
From what we've seen so far of Crash 4, the core fundamental gameplay elements look good, but they still seem to lack that sense of weight/heftiness/visceral-sensation that the original Crash games did so well with controlling Crash. Crash 4, so far, unsurprisingly looks more like the N. Sane Trilogy in this regard rather than the original games.
All this said, I'm still very excited for this and will play the hell out of this when the time arrives.