My experience with aging cigars for multiple years is hit-and-miss with whether or not the stick's flavor improves. I think the ones that I perceive as improved with age is marginal at best, and all in my head at worst. That said, I have found tremendous value in resting cigars for 3-6 months... Cubans even more than non-Cubans.
There's certainly nothing wrong with smoking them right off the truck. But with at least a couple months of resting to get them to my preferred RH improves draw, decreases bitter flavors, and helps to get a steady, even burn.
The next time you order a box, smoke one right off the truck (or a day or two later, makes no difference really). Note whether you get any sour or bitter flavors. Make a mental note about how tight the draw is and how many times you have to relight. Remember how badly (if at all) it canoes or caves and how wonky the wrapper burns. Then put them in storage at your preferred RH. A lot of people, myself included, find that Cubans respond well to lower RH. Try one after a month of storage and make a note about the same things above (burn, flavor, draw). Then try one after three months and observe the same qualities. You'll likely find that instead of looking at it as "Geez, I can't smoke this yet?" you'll start looking forward to what rest has done for your stash.
If you like your results, you may get into fine tuning your RH. I like mine at 65%, but a lot of people prefer their Cubans at 62% or 60%, occasionally even lower than that. If you like it enough, you might even get into the real long-term aging and draw your own conclusions as to whether the tobacco improves much between 6 months of rest and 6 years of age (or much longer). Of course, if you find that sticks with some rest are not your thing, there's nothing stopping you from enjoying them before the mail truck pulls away. It's just an endless hobby of pursuing the "perfect smoke" and trying to replicate that experience. I'm not sure anybody has actually found perfection. If they did, they probably set it on fire.