My gut reaction: it looks great! Also, there is no way I’d use it unless Google committed to not killing it off for at least five years.
I don’t mind trying experimental personal tools, but I really don’t want to get a whole team of people reliant on this thing, just to see it get cancelled like the hundreds of other projects Google has killed over the years.
A paid support option would be nice too - I think I saw something about a paid “support for ANY Google product” option earlier this year but I can’t find it just now.