I dunno this seems pretty bland.
With the first three they had the interesting dynamic of the "seen it all, know it all" more experienced agent with the "able to think outside the box" rookie, with that dynamic growing over each until they were on somewhat of a more even level, and that dynamic being somewhat flipped in the third.
but here…
you have Chris Hemsworth's slightly bumbling but still competent agent, which is passable
and Tess' character is…

I honestly can't see any personality to the character
the one scene I found noteworthy (with the neuralyser) was she's somewhat straight to the point
and that's about all I can see.
I know I'm also not the only one worried by the somewhat Mary Sue qualities this trailer shows.
For one, M shows up at MiB because she found them, which is honestly ridiculous that she would be the only one to manage that.
and two from what we see here, she has literally no difficulty when she's just starting out, when the first film even told "the best of the best of the best" to forget all of their training because it wouldn't help them.

One other minor problem is the London branch of MiB literally having a poster of J and K from the first film up (obviously to tie in to that but still executed badly)
presumably for "saving the world" when K consistently has mentioned previously the world always needs saving and in the grand scheme of things what they did was basically a day on the job.

Cont.
Also, forgot to post this since I mentioned the cartoon

Ah, I miss that cartoon along with the likes of Big Guy and Rusty, Ghostbusters, and Godzilla shows. Surprisingly better than what you would expect of Saturday Morning cartoons.