There's no such thing as a parameter that's "wholly outside of human control" when you account for technological change. If there's an easy way of providing a free +1 INT, +1 WIS boost to a non-trivial chunk of the population via, let's say, tailored mRNA vaccine injections, I'd sure want to know about it!
Research is not even close to being restricted by those moral matters. There isn't an easy way today, not even close. If there was, it would also be a way to rid us of ugly debuffs ranging from genetic disorders through allergies to cancer.
mRNA can change gene expression locally for limited time, enough to train your immune sysem but not for permanent changes. CRISPR can make permanent changes but but for now only to few cells in vitro, not to whole organism. Even the Chineese CRISPR modified twins are mosaics of modified and unmodofied.
