My advice for longevity is this; Keep up on the preventive maintenance. Keep in mind, the mileage recommendations in the owners manual are maximums. If you live in a 4 season environment, have it treated with Fluid Film annually. Keep it garaged, keep it clean.
My strategy for accessories has been mostly to start with functional upgrades first, then cosmetic. I've purchased from a variety of vendors, and can't really suggest anyone specific.
I have added Ford's tow package, D Rings for my modular front bumper, a 2nd OEM recovery ring on the rear end. I also bought a set of used OEM rock rails. Installed a dash mounted USB power/data port. I bought mine from Buttercup, but Mabett sells the same one. I replaced the door pocket nets (hot garbage) with molded plastic from an Amazon vender, plastic storage inserts for the door handles, also from Amazon. I installed protective rubber mats for the rear seat backs, also from Amazon. I put a short accessory rail on the dash. I bought it from someone at SuperCel East 2023.
Cosmetically, all I have done is replace the fender fridge magnet looking stickers with chrome old school Bronco script badges, and put red covers over the bronco lettering on the grill. Both from Amazon
FWIW, I have a 2022 2 door Basesquatch.

"There's nothing better for the inside of a man than the outside of a Bronco" - John Bronco