Don't hold your breath lol
The pokemon projects started for me because I got tired of not being able to catch all of them in one game, especially with many not being available in whatever the current gen would be. I felt this made the games incomplete since you could never get the completed pokedex. (well most can't without hacks or cheats or mods) And then there's the difficulty, which for the past several pokemon games, to that point in time, didn't exist. So I did something about it. And then they made a remake of my favorite pokemon game up to that point in time, Gold. I couldn't not play it, and again it had to have them all. I almost didn't do a Silver mod because Gold was all I, personally cared about. But then the perfectionist kicked in and I thought about the fan base and so I decided, Silver's mod had to happen too.
Then they added even more Pokemon and I decided it was no longer worth it to try and figure out logical wild locations for many of the Pokemon. (especially since I am/was no longer familiar with every pokemon)
So that's the story of Perfect Platinum, Perfect Heart, and Perfect Soul.
They were birthed by desire, and became a necessity.
If there are specific mods you would like to see in those games, start working on em yourself and see where it takes you. If you want em bad enough, you'll finish. ;-)