No, +Google , just no. Not now, not in a very long time. Don't do this.
I'm an heavy user of +Inbox by Gmail , and I almost use it exclusively for my e-mail, GTD and related things. I excuse its bugs and quirks and even many of the lacking features. But not a week goes by without me having to use +Google Gmail instead, because I want to do something that simply can't be done on Inbox. And I'm not talking about weird magic stuff here, I'm talking about very simple things. Notice, as an example, that only in the last few days was it possible to reply to a message inline! Where are basic things like "send message in plain-text"?

No, sorry, but no.