Agreed, I had the same experience. I might be waiting for a password reset or shipping email, or something on a mailing list, and with Inbox it was more of a guessing game.
I've gone back to using standard Gmail but added the Inbox Categories, which I find to be very useful on top of the labels & filters I have in place.
Maybe - I think we might see a bifurcation between the Gmail experience for consumers (Inbox) and what they provide as part of Google for Work.
I'm looking for something that resembles GMail's actual functionality that is currently supported by Outlook and a variety of other email clients. I would just prefer a Gmail-native app because the Gmail app works more smoothly with Gmail than Outlook or any other provider does - particularly around search.