More improvement in the area of vaccine technology, acceptance, and adoption of these techniques: alternative forms of administration, less reliance on boosters, improved thermal stability. A better understanding of the immune system, neuroscience, and human biology in general. I expected more infectious diseases to be eradicated such as HIV, TB, and malaria.
These things are progressing and I see hope in how technologies are progressing, but I believe vaccine and infectious disease research and development have been severely limited by the industry's obsession with intellectual property and pursuit of profit. Our understanding of human biology has improved, but thinking back to my teenage years, I was naive as to how complicated biology is and how little we actually understand.
I'm still a bit salty no one ever brought dinosaurs back from the grave. Our progression in flight technology has been disappointing without flying saucers too.
Even if someone disagrees with your argument, there are alternative versions such as lisdexamfetamine (Vyvanse) and methylphenidate formulations (Jornay PM, etc.) that cannot be separated from their extended release mechanisms. They literally cannot be abused.
Lisdexamfetamine exists as a generic now too and shouldn't cost more than $15 for 30 pills (though I know there are pharmacies that will price gouge it). I don't know why any med provider would put you on Adderall at this point besides insurance issues and lisdexamfetamine is a pro-drug that delays access to the active drug in a way that is dependent on enzyme activity in your red blood cells. There is a hard rate of release limit to how much can be made available and this cannot be overcome. Methylphenidate isn't quite there in terms of access due to IP, but it's on its way.
Keeping the more advanced versions of these stimulants as schedule II is nothing but cruel. Either the limiting mechanisms are proven and they should not be restricted, or you don't trust them and never should have approved the drugs for use.