Again, this isn’t actually an idea. It’s a starting point, and as a starting point there’s nothing wrong with it, but it could be done well or badly. At this point all I can do is shrug and say “sure, those are interesting cultures, although I don’t know much about them myself.”
To put it another way, if you start from a design brief of “a Pokémon based on ancient Egypt,” one person might come up with Lucario and another might come up with Cofagrigus (as it happens, both of those are Pokémon I think are very well designed). I have absolutely no clue what you have in mind or how well it would work. If you’re asking “do I want more Pokémon based on ancient cultures?” then sure, I love those.
Pokémaniacal 