Very true. I'm personally happy with moderate trails and don't invision a lot of ture lifting in my future so I don't regret going with the lsd model at all. It's been very good to me so far.
If you're just planning on overland type off roading, don't over think the lockers and disconnects. With an LSD model you'll be surprised what you can do. Good tires and a nice lift will go a long way. You really need to question if you will NEED those features or not. It's not a matter of rubi...
I highly doubt it's due to caster. Just retorque the suspension yourself instead of running through hoops with the dealer. I had death wobble once on my icon lift and mopar lcas. Track bar got loose after initial installation. Nothing since retorque. Doubt it's the engineering of the kit.