Just like SuperKlaus said on the thread: "So if they get enough positive feedback / sign-up they'll build it?".

That killed it for me too. I have nothing against QuickMVP. I just don't want to signup for a product that doesn't exists (also, it so happen that Hatch doesn't interest me, but that's not the point). However, had they (Hatch) been a bit more "honest" and said "We're gathering email to see if there's interest in us building this app" instead of "Request an invite", I'd bet people would be more inclined to sign-up.

So I kind of agree. Not interested until I know what it really is and I can't know what it really is until they build it.