Conceptually I'd like to see 4 motors utilizing something like a portal style axle for clearance but I'm sure they'll go with independent suspension all around.I didn't know they had issues with going slow. That's an easy programming fix IMO. I would think Jeep or someone will add an infinitely adjustable crawl ratio at some point.
In fact you probably won't need lockers or anything at that point. Like better than lockers. Like sensing which wheel needs the power more, etc.
The additional weight will likely take some decades to figure out. That's good for towing though.