Digimon Evolution

[Renafan]

A common theme in Digimon is evolution. Growing stronger and bigger (not in all cases. Look at MarineAngemon) to further better yourself. Why is it then that the limit is Mega? I mean, we've seen a few go past Mega...Myotismon, and perhaps Lucemon. Do you think it would be possible in the future that Digimon go past their set barriers of Mega and go into further advanced stages? Just a random thought really.

-Renafan