FYI: If you click on the newly built mech it can be sent to storage or scrapped instead.
Yeah, I like having some time to compare/contrast with what I already have and try load out possibilities before selling/storing. Obviously if it was a locust I wouldn't hesitate to scrap the new one but three of the mechs I completed at once was a Wolverine, Griffon, and the ML Hunchback variant so was a bummer I couldn't view them first and try out load outs before having to make a decision. So I immediately bought the second bay after that to avoid that happening again. Of course, I probably cursed myself into never getting lucky salvage I like again lol.