I would lift for ground clearance. That means bigger tires. That means reconciling the tire/strut interference. So I would start there. Changing the driveline angles with a lifted body and no gain in ground clearance IMHO is waste. I laugh at 8" lifted jeeps that have no more ability to get over a tree stump than a stock base jeep.
But then again, with bigger tires comes greater forces the engine has to overcome. So one step forward, one step back.
I think getting the Renegade comfortable with 30-32 inch tires by eliminating strut interference will be the best ground gain reasonably possible without going full BAJA on it.
But again you will lose some power to the ground. So I guess this idea will give a Renegade that is good going over level rocky ground but suck hill climbing. I guess this will still serve the majority though.