How is that any different from watching a movie once?
Besides, the press releases indicate that these series will be released over the course of several years, as opposed to Arrested Development being released in its entirety all at once.
And since all of the characters team up at the end for the Defenders mini series, it is likely that they will have guest starring roles among the various shows prior to the final mini series anyway.
Also, I'm not sure why you are using Arrested Development as an example. Arrested Development was never popular to begin with, that is why it was cancelled in the first place.
For the amount of drek that gets pushed in this thread, it is a bit ridiculous to downplay the first appearance of a character from the big two that just got her own TV series.