I don't think it would be possible to make a Buu saga... it'd run into problems right about here:
Majin Buu: it is candy beam time!
Majin Buu: come in closer range so i can eat u
Trunks: ha u r doomed now majin buu!
Goten: we r going to fuse into gotenks and beat u!
Majin Buu: lol
Majin Buu: there is no fusion in ESF
Piccolo: damnit
** Majin Buu killed Goten with candy
** Majin Buu killed Trunks with candy
** Majin Buu killed Piccolo with candy
Majin Buu: w00t
But a Frieza saga is possible, I'll think about it.
It didn't really take long to make the Cell Games, only an hour or so. Well, I guess that IS a long time to spend typing something on the ESF forum...