The separation has never made any sense to me. Perhaps the feeling was that Ram could garner higher prices without the Dodge name attached?
I am thinking that if FCA were going to eliminate one brand, the best bet would be to eliminate Dodge rather than Chrysler.
For one, Sergio is focusing on luxury and high-margin brands and I suspect a Chrysler brand could command prices above a Dodge brand.
Dodge sales last month were approx. 47k while Chrysler sales were 15k, but if the Caravan (moslty fleet now anyway and gone soon) were a Town & Country instead, then the Caravans 15.5k units would have made Dodge and Chrysler brands nearly equal last month at around 31k units each.
Move the next Journey and Durango over to Chrysler and the next Challenger having a Barracuda trim level and Dodge could be eliminated.