The moment when, in trying to slim your options, you come up with more things.
I either want to do something involving:
Jyarimon->Gigimon->Guilmon->DarkTyrannomon->SkullGreymon/MasterTyrannomon->RustTyrannomon
Botamon->Pagumon->Gazimon->Cyclomon (Not sure what else)
Or something that goes from Kumemon to Gryzzmon to a custom Skeletal Digimon, and I'm not sure what after that.
Or
Pabumon->Mochimon->Mushroomon->Woodmon->Blossomon->Gryphonmon. I have an interesting idea for the human character there.