Hi, I'm dongdone.
For a while I've been collecting lewd sprites from various sources and recently got to organizing them. Love the work you've been doing with the Platinum romhack, so I felt compelled to share. There's not really many male edits out there, and even fewer Gen-4 style overworlds unfortunately.
I have to first give several apologies, I mainly play Essentials fangames which doesn't have near as many restrictions as ROM hacking. If you find any of these usable, you will have to do at least some editing, some of the sprites from your own hack, and there's various minor inconsistencies. Many of the sprites weren't made by me, and the few I did were spliced from other's work. I don't want any credit or acknowledgment for this, this isn't really my work after all, and I just mainly want to lurk.
If I can be greedy, I ask that whatever final version you release has a bonus folder of all the sprites cleanly extracted, and older/other variations. 

Viewier's message:
Hey y'all. I'm here to give you a guide to this archive.
Base_battlers and its associated folders have sprites made for the base games from gen 3-5. There are trainer sprites and Pokemon sprites here. The Pokemon sprites have genitals! I'm not sure what the .DS_Store files are for. Bear in mind that not all sprites ever created are here, just a bunch of them. Any sprites created through the loverslab thread likely won't be there. Plaguemon's sprites are also absent.
The ROMHacks:Fangame Rips folder has rips from a bunch of ROMs, fangames, and creators.
1. MonsterUnderTheBed and PokeLustCompany are creators.
2. Uncensored Edition, Dark Rising, and My Ass Lewd Version are ROM hacks.
3. Rejuvination, Ecchi Version 12:20:23, Insurgence, and Alternate Infinite Fusion are fangames.
Pokelustcompany, Uncensored Edition, and Ecchi Version contain multiple folders, with some folders containing sfw sprites.
Ecchi Version definitely has the most, but some of it is not pixel art.
Dark Rising has a patch to apply it instead of sprites.
Every other folder has basically just sprites.
Merry Christmas!