PS5 Request for Remastered PS1, PS2, PS3, PSP and PS Vita games on PS5 and PS4

Alas we’re not official Sony PlayStation forum so your request will go unheard by them. You should contact Sony.
I suspect that unless Sony is the developer of the games then I can’t see that happening especially as they can just add the original games to PS+ at a cost of £120 a year.