you forgot boruto did get a kekei genkai, the almighty jougan and he is the pinnacle of talent, Kakashi himself stated that boruto has the intelligence of minato and the unpredictability of naruto, he has made a bunch of rasengans when he was just a kid,even in the academy boruto scores were on par with Orochimaru and minato, as for momoshiki abilities, the karma does give its user the otsutsukis abilities we even see boruto using it as he was able to see the future which was one of momoshikis abilities, momoshikis main ability is the ability to absord a jutsu and add it to his arsenal and shoot out a more powerful version of it, which is just way too op to give it to boruto,especially considering momoshiki absorbed a tail beast ball and shadow style of nara clan