I keep wondering why the "vaccines" all rely on the spike protein... Especially the mRNA vaccines could quite easily be "programmed" to produce other virus proteins, no? Like the nucleosid protein; so why didnt anybody do that?

My 2 cents: the spike protein is the one that is exceedingly well researched; indeed the whole "gain of function" affair (i.e. using the spike for future medicinal purposes, of getting molecules into cells) points to this. See the now infamous Daszak quote, https://www.youtube.com/watch?v=IdYDL_RK....

So it was quasi-available, never really worked before, and along came SARS2; perhaps they tried to hoist the virus by its own petard. (Which it wouldnt even have, if it werent for that very research.)