People need to get a grip, it's a card that was designed in every way to simply replace professional versions of their Hawaii cards, nothing about it was designed to improve gaming performance, every single addition was to support more compute functions and better improve efficiency for gaming. A by product of making this professional compute card is it's on 7nm, it runs faster and is more efficient because of that so is superior to Vega 64. So they either don't make a gaming version, or they do. If they don't people say why not just release it for consumers, if they do, people compare it to a pure gaming card from Nvidia and wonder why it's not trashing it. A it's not in the same class, they didn't go from a Vega 64 with 480mm2 die to a 480mm^2 7nm card, they shrunk it, added some compute and released it.
There is nothing about it that was designed for gaming efficiency, it wasn't designed to be a die size or transistor count that wasn't achieveable on 14/12nm, it's a professional card repurposed because the higher clocks make it a little faster than Vega 64, nothing more or less.
Midrange Navi is likely to be around 30% smaller die, completely optimised for gaming alone, no compute that can't be actively used for gaming, it fp16, but nothing fp64, it will be significantly more efficient both in die size, power, etc. I'm guessing a ~240-250mm^2 core, something along the lines of 2080 performance and at ~£300 mark. gddr6 and significantly smaller die size as well as not being the first 7nm product and on a process they've had time to learn from and tape out a second chip all mean it can be way cheaper.
In terms of the card itself, we'll have to see real world performance, clock speeds and maybe most importantly overclocks but if it's $699 comes with 3 decent games and ends up being 30-40% faster real world it's not particularly bad. It's better than not having the option at all. It's not a great card for gaming but they have it and can make it available so they did. if people want it, good, but this was never about making an efficient gaming card.