Alright, I've got one. I'm drafting a game inspired by the Lacuna corp from "Eternal Sunshine of the Spotless Mind". Basically, you would use tools that function much like the time travel devices in Project ECCO to investigate one year of a patient's memory and use your findings to pinpoint times of stress, anxiety, or trauma and either remove or "blur" them according to the Patient's request. The overall goal per patient is to fulfill their requirements ("I want to remove this phobia" "I want to re-experience this video game again" "I want to forget this person") without causing too much harm to their personal growth.

My idea is "The Broken Watch" and will act as expanded character/world building after you reach an endgame scenario in Project ECCO. The Agent suffers a loss of memory after their 6th encounter with The Agency or The Entity after a jump gone bad. With just the broken Watch to jump through time, they will move backwards through their own personal timeline using the same journal as the Project ECCO playthrough to explore their character and their connection to The Agency and/or The Entity. 

I'm working on adjusting the mechanics for the watch device so you move backwards through your personal timeline as well as implementing a "spare change" aspect where you spend the loose change in your pocket to reach a conclusion somehow. So far I like the idea of spending the change in a phone booth where you listen in on a memory long forgotten. I might want to have the ending circle back to the first prompt of the Project ECCO game somehow, like after discovering your character you can decide to either continue working with The Agency by picking up that package, or to get yourself out of the loop and start something fresh. Or something.