Imho the Apple Thunderbolt Display is still a great (and way much cheaper) alternative for those of us who can't care less about refresh rate or pixel density.
If this one had a bigger size (say, 32 inches) and a more 'squared' ratio, I'd consider it an upgrade.
The thing is, a lot of people care about pixel density. That said, I'm not willing to pay $1600. Hopefully other manufacturers see the demand for 5k and produce cheaper (quality) alternatives.
Couldn't agree more if I wanted to. I've long used the 30" Cinema displays as they were trivial to find used for pennies. I spent a week mulling over the Studio display as it's nearly what I'd been hoping for. Found a Thunderbolt display (+ 2018 Mac mini) for a couple hundred dollars locally. My only annoyance is that I can't use the MagSafe connector built into the display cable…
If this one had a bigger size (say, 32 inches) and a more 'squared' ratio, I'd consider it an upgrade.