Conventional travel trailers have an economic life of approximately six years. It will be sold or traded at that point. It may have as much as 30k miles on it in that time, but I suspect it is less more than the majority of the time.
The suspension is flat dangerous. Aero is a ways behind this need to correct farm wagon suspensions. Even horse-drawn coaches from 150-yrs ago were better. This has to do with the trailer staying on the road.
My divergence from your point is minor. Both should be done. But until roof and wall seal lasts more than that six to ten years, it doesn't much matter about either of our objections given the few low stress miles covered.
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