>implying it has to be giovanni
genwunner detected
For the record, Gen 1's the worst generation.
Anyways, the point was whatever Pokémon Boss you chose would have to have a team of Pokémon (since none of them really fight their own battles), which takes a hell of a lot of dev time. Not only that, but the choice would have to be approved by Game Freak, and you know how much they love to push Gen 1...
Well, you could maybe have Nihilego-Lusamine, but then you'd need to fabricate a moveset from scratch, which again, takes a lot of dev time.
personally I would add Miror B but that's not happening anytime soon.