>>119377074TDI: all the characters and plots were written for this show. The finale was a continuation of the Gwen-Heather conflict.
TDA: too many episodes and too few characters caused it to drag in the middle. The finale was between 2 characters with no conflict. Also Beth was bland.
TDWT: the new/old characters fitted the plot. The finale was a continuation of the Alehandro-Heather conflict.
TDRotI: the entirely new cast were less interesting. The fewer number of episodes/characters meant the conflicts couldn't be as deep. The finale was between 2 characters with no conflict.
TDAS: the writing was weaker and relied too much on Mike/Mal. The finale was between 2 characters with little conflict. Also Zoey was bland.
TDPI: a poor cast with weak writing. The finale was between 2 characters with no conflict. Also Sky was bland.