Welp, I'm at 51k on the ODO, and I'm staring at a whole pile of Carli parts in boxes in my garage, so obviously I think it is worth it. ....
Honestly, you just need to decide how long you plan to have the truck, divide the the cost of the suspension mods by that timeframe, and then decide on your use case. ...
Is it $10k for 2 years of hwy commuting comfort? Then ask yourself... "would I pay a $415/mo subscription to have a smoother ride on the way to work every day?" For me, that's an easy no.
Or is it $10k for 10 years of frequent backcountry exploration and adventuring with others. That becomes... "would I pay for an $83/month subscription to be able to take my wife and kids on impromptu adventures and experience trails we otherwise would opt out of doing because the stock suspension makes it unbearable?" For me, that's an obvious yes.