Really it's pretty simple:
If you want something affordable and easy, but minimalistic and so-so footage, go Mini
If you want a something better than a mini and at a discount until stock is out, but don't want to drop coin on a improved revision, go Air
If you want 4k/60fps with a decent cam and some early previews at what's to come with improved tracking, go Air 2
If you want a actual zoom lens with a decent cam, go Zoom
If you want the best camera quality and customization, go
Pro 2
If you just want better than that from a DJI perspective (and without going Enterprise level) well you've got probably several months to wait for
Mavic 3 series.... though I have suspicions they will likely do a silent update to the Zoom and
Pro 2 to incorporate some software level updates of the Air 2 (such as Activetrack 3.0) before they phase out the
Mavic 2 series.
I've heard some say they think they'll 'unlock' a 4k/60fps mode for the zoom/
pro2... but as that's more hardware limitation specific, not sure such is possible. or maybe it is, I dunno... We can argue sensor capabilities all day, but in the end, even the Air 2 sensor is capable of 4k/90fps, but they've locked it to 4k/60fps, so it's plausible that the
Pro2/Zoom sensors could have some locked potential up DJI's sleeves.