I value the input on Creative Sparks, indeed there are lots of things that haven't been established about them and the events that have occured so far here can be explained away as abnormal and unusual should the truth of the matter be established at a later point, and they contradict. The only prior dabble I did with Creative Sparks was the fact that the revived Evelyne did not have one, and if it got recovered it's still damaged, and that is why she is slowly being reinfected.
Flumberfluff Aiden is dead. Teenyweeny Aiden (Future Intrepid) produced a means of cheating death by leaving part of his Creative Spark like a beacon of sorts in Unverse that he could use to rebuild himself off of over and over again. This failed, however, for whatever reason, maybe with the Freezing of Unverse and hanging around Flumberfluff Aiden too much being variables to its failure, and Teenyweeny Aidens' Creative Spark attached to Flumbefluff Aiden's instead. When Flumberfluff Aiden died, with Unverse no longer being frozen, the reverse occurred and Teenyweeny Aiden finally rebuilt, but with Flumberfluff Aiden attached to him now. At this point they're the same person.
The nearly three years is the time in between Teenyweeny Aiden's "death" and his "return", as he sacrificed himself in October 3028 (the end of SOTS) and this story is in June 3031. Falling back on the nearly three years moniker is also a joking reference to the previous story being titled Three Years despite less than Three Years occurring in the referenced time span.
Names have power, because Future Intrepid literally became Future Intrepid.
I'd be lying to pretend that SMASH was not inspired by SNG.