Curate, connect, and discover
It would be interesting if Pit madness acts like a parasite. The reason it normally goes away with other is the Pit Demon starves and dies after eating excess Ecto left on the body. The more liminal one is, the longer the pit demon survives. The thing is Jason is undead on his own, crawled out of his grave and everything those 'produces' his own Ecto that the the Pits feed on to survive, leaving very little to Jason, just enough to survive and have alight enhanced healing.
The fun part starts when Vlad over shadows Jason and the Pits found a better source than a 'malnourished' revenant. Just Imagine Vlad accidentally catching the Pit parasite and it all transfering to Vlad. A more abundant and healthy source and can cause more proliferation. Unlike Jason whose mostly alive, shit start to hit the fan for Vlad because he's only half alive and sustained by his ghost half so he's a lot weaker now to reserve energy.
This also allows Sam, Tucker and Val to take center stage since can't let Phantom catch Ghost Parasites. Fenton parents hunting Plasmius for 'being and evil ghost hive mother' and 'trying to take over the amity ville with it's evil ghost spawns'. Not to mention how the rest of the Zone will treat Plasmius. "Ew, where have you been. It's what you get for overshadowing random people"
I want Jason and Danny get a relaxing doctor's visit, complete with 'vaccinations', ghost health talks, and out-patient prescriptions. Danny and Jason teaching each other, one being a ghost while the other, proper vigilante training on top of school work. There are no ghost incidents because no Ghost wants to catch Vlad parasite/Pit demons that's proliferating. Just them hiding away in the fortified Fenton home tutoring Danny because he desperately needs help. Jason seeing the Team Phantom in action, the Fenton Parents, GIW, Vlad masters with the perfect excuse that the only report he has on Phantom is him being a halfa, half human, thus by default became a gatekeeper as well as a diplomat of good reputation to the other side and 'definitely' not a 'violent' menace nor non-sentient or malicious.
When Mr. Lancer got promoted to Vice Principal, the school hired a new English teacher, an out-of-towner who wasn't phased by all the ghost stuff. For the first assignment of the year, he asked them to write a paper on any Shakespeare play they'd ever read.
The Monday after the paper was due, Mr. Todd asked Danny to stay after class. Danny frowned; he thought he'd done really well on the paper! He turned it in early and everything!
The teacher waited until everyone had left before asking, "Kid? Is everything okay at home?"
On the desk lay his paper, titled: "Why I Should Totally Kill My Godfather: An Essay About Shakespeare's Hamlet, I Swear".