Not unplayable
Yes, unplayable fits. You can't currently make a character with it since the RAI are so badly written or absent. That's pretty basic. That has nothing to do with six books not yet in the mix.
It's not that a determined and clever GM can't make it work and bridge the myriad haps and stitch up the loopholes as they arise. We've seen that they can. The problem is that they
have to do that just to run the game .
This means each GM has to maintain a houserule document just try to play it RAW/RAI. Players can't use the book as printed, because it's either been erratad or houseruled, and so there's no point in buying a hardcopy. And if they play at a new table, fundamental details that completely change a build (like how unarmed damage is calculated) may be in play that make certain builds immediately unusable or require rebuilding.
The PDF may get updated regularly, but that is not likely to make up for all the missing info, especially when constraining the book to an arbitrarily lower page count (when page count wasn't the problem with 5).
So, yes, unplayable and definitely irresponsible as a game company to have released in such a shape.
As for mining it for ideas, as it stands, I think the
only thing I am considering keeping from it is the action economy. Almost nothing else is working for me the more I read through it.
The only upside for me is that I am writing more homebrew and retro porting, and may actually play some old school shadowrun again. Going back to the good times.