on what would satoshi and original development team (whoever who or they are) do differently

Satoshi is not awesome because he was watching the crypto world and had a brilliant idea. He's awesome because upon having this idea, he carried it out. You know what I would've done if this idea had come to me? I probably would've mentioned it to a few people, maybe written some very basic code if I was feeling especially ambitious. You know what Satoshi did? He spent 2+ years contemplating every possible aspect of the system he could think of, and wrote code that worked brilliantly in the real world. Satoshi's code was good, but anyone who had read a good C++ book could've written similarly-good code. Anyone who had taken an intro crypto course or read a few books on the subject would understand Satoshi's usage of crypto primitives. The task of creating Bitcoin required a small flash of brilliance, moderate skill, and an unbelievably huge amount of dedication to thinking about, coding, and testing the system until it worked exactly as envisioned.

Satoshi's lesson is that you don't need to be the next Einstein in order to change the world. Nor do you need to have much money, or influence with the world's "movers & shakers". You just need to put in the effort. Satoshi, probably just an ordinary hobbyist like anyone here, saw that something was lacking in the Universe, and he fought tooth-and-nail for 2+ years until this imperfection was corrected. This is what makes Satoshi and his work my greatest inspiration.