I like how you think, but that would be a less desirable solution than using the UCAs with adjustable and/or built in additional caster which already exist in many forms. The load would be moved further out on the pin, increasing the force required by the pin to carry. It's been over 40 years since I took statics and dynamics, so I don't remember how to calculate the additional force, but I'm sure one of our engineers on the forum could. Maybe not a problem, maybe not. I think it might also require adjustable strut rods, or at least a custom bushing. It would also likely cause an issue with the torsion bar seating properly.