As far as Motorola it truly is a wait and see. If Lenovo can stay out of Motorola's way and allow them to continue the momentum then maybe. But we know they are going to look back and go "Since the Motorola Droid (in 2009) you have been losing money. The only other success was the Motorola X (which came late and because the price was dropped). We are here to make money so that means changing a few things to do that".
The question is what will Lenovo change, will they sacrifice build quality, open up to designing a one (or 2) featured phone(s) a year on every carrier to compete with Samsung and HTC, or take the Moto G as the cue and look at building a bunch of low end phone that can sell in the over seas markets?