LNL bushings are like an infinite-hole turret. You never run out of room on the turret plate. Additional Lee turret plates aren't too bad, but some of the others are quite expensive.
The nearly horizontal bearing surfaces of the LNL sleeve/bushing, together with the o-ring, allow the die to float laterally without tilting, for self-alignment with the cartridge. Lateral float in threaded dies (as Lee hypes with their lock-less rings) imparts a corresponding tilt to the die, which hinders self alignment.
All we really need are Lee loaders. Reloading presses are just a tool for the lazy... Turrets & progressive presses? wow those users are really lazy.
I use a Forster co-ax with it's own quick change die retention system. I just have to use Forster, Hornady, or the old, clamp style, RCBS lock rings with it.
Andy