i dont even have longarms and i limited my flex purposely. looks cool, but massive flex can be a burden offroad. id rather lift a tire in most instances.
Nearly all long arms suspensions (seems to me) are limited not by the arm droop, but by other things like 1- Shock Length, and 2- Steering binding (My drag link is stock and binds badly.)
Never once have I thought "OH shouldn't have gone rough country y link, my flecks isn't good enough."
Real world, you don't need 3 feet of down travel. (You need lockers)