I found this more relevant:
A small sedan based on the Mirage is also under “strong study” for the U.S. market, Swearingen said. Other product updates include adding a 2.4-liter four cylinder engine to the Outlander Sport to complement the compact crossover’s existing 2.0-liter engine, plus a new continuously variable transmission for the 2015 model year update.
It sells well around here and would definitely benefit from a bigger engine and presumably less rubbery CVT.
As for the Renault part, in this economy automakers need to sell every new developed model by the million to pay back the R&D costs. Mitsu is too small to roll on it's own and such a move may actually save them. And Samsung? I'd guess their interest in cars is linked to their battery business and possibly future market share in autonomous and infotainment technology. Smart way to enter a NA car market.