Let's Go Pikachu & Eevee probably served a one off purpose, the release of Go was still recent and it was also a way to get younger audiences into the Switch (much more expensive than the 3DS) and get everyone on board for SwSh release the year after. Eevee neeeded a few months of promotion and hype in order to try make him as close as possible in popularity to Pikachu and they aren't doing it now with any Pokémon I believe, they're not going to do a Let's Go Bidoof.
Now, a remake using Let's Go graphic style is possible but I think they'll make it similar to SwSh just like every generation that had a remake.
Now, a remake using Let's Go graphic style is possible but I think they'll make it similar to SwSh just like every generation that had a remake.