Quantity can matter, but quality does also. From memory the Hassleblad 80mm for example was measured at around 65-70 line pairs per millimeter resolution (the measure we used before pixels), the Nikkor 55mm Micro managed 80-90.
Image power.
Perfect technique is irrelevant without image impact. Great photographic images have been created for well over a century. Some, especially early ones had obvious technical short comings, but regardless had the ability to hold our attention, to tell their story. Better technique was always the ideal, but a powerful image in its time was still iconic. Ironically, older, less technically perfect processes have one huge advantage, increased longevity.
The digital era heralded a period of technical improvement (much needed early on), that became infectious, addictive even. It became the habit to compare “X” to “Y”, empowering many web sites and a sub-hobby in its own right. That time has passed folks. All cameras are good enough, too good even, lenses are getting to point where their perfection is robbing them of character and the reality of end use seems to be forgotten.
Realistic needs.
Ok, lets be honest. Who among us ever prints fine art prints bigger than 16”x20” and if we do, do we leave our technical prowess at the door and throw ourselves to the mercy of just pixel counts and auto correct? Independent tests have proven that even this size cannot reproduce the full information of a 36mp sensor without unrealistic efforts being taken and if they do, we are down to viewing with a loupe. Who does that?
Maybe a book or two is your ambition, a decent web site, maybe displaying on a decent sized screen? The good news is, these all have their limits and in most cases, you have surpassed them.
Future Proofing?
I can guarantee you, your images will have to stand on their own two feet artistically or for their relevance before anyone cares a hoot about the technical issues. Issues likely only you see anyway. Things age and change, something you cannot stop. More future-proofing quality is a very small part of that picture.
I love the work of the early colourist photographers like Haas, Herzog or Leiter. I do not like the more modern takes some publishers have forced on their work, much preferring the originals for their gentle authenticity.
The truth is, the future will bring ever more powerful software to increase quality short falls, but you may actually choose to avoid that. Let them be what they are, representatives of their time and place.