I hear you. The common fix for TC rear suspension is adding some kind of air bags or air shocks and a mongo anti sway bar, but I”m thinking it also adds a few more undesirable traits to the ride.
You are right thinking we are just experimenting to get the right tone. I’ve been into working jeep suspensions for decades, doing about a dozen SOA’s and ‘working’ the spring packs to have the most flex and still support the load. Some of that experience does translate to a heavily loaded pickup. My journey to suspension nirvana has been one long experiment, with lots of lessons learned. The fact is, my RAM, now without the camper on for the first time in 5 years, rides terribly, even with the Rancho 9k’s on the wimpiest setting and the secondaries unengaged. But I have full tire pressure; and nothing in the bed. Over time, i’ve moved the suspension more toward heavy off road use with the camper on and away from the empty road warrior. It’s really a choice.
The best, all-purpose rear suspension with a camper on and off is still the upper overloads or secondary leaf springs with adjusted Stable Loads because they only come into play when you have a load.This is a close as you come to having it both ways.
2020 Ford F-350 XLT FX4 4WD SRW SB SC 7.3L Godzilla Gas TorqShift 10R140 397 amps dual Alt dual batts Frnt Dana 60; Rr Dana M275 E-locker 4.30's 4580/4320/4066# payload 7243# curb wt. 11,300# GVWR 5-er prepped. 2020 Northstar Laredo SC, 12v compressor fridge, cassette, 320w Solar sub zero insulation.