I30N is a great car, guess the i20 will be good for its class, although a little underpowered for my liking. They are also doing an i10N too which looks funky as hell, although more of a styling package with only 99 bhp, not going to scare any hot hatches, or even warm ones, but still cool.
I'll eagerly await the new "rumoured all electric" 208 gti, having driven the standard electric e208, I can tell with extra power and tweaked handling, that will be a thing of dreams.
They'll share platforms, engines and tech, but I think PSA plan their own brands, you might not see Peugeot as a stand alone manufacturer there, more likely it will be thier luxury brand DS Automobiles.They have some very nice cars like the DS7 SUV and the DS9 saloon which would suit the US market well. Very nice tech packed luxury cars.