The unspoken truth is that the Clintons are not really popular with many Democrats, especially liberal MSNBC and Daily Kos types.
In short, the Clintons are not liberal enough for the Democrat activists.
Clinton is not seen as being as liberal as Obama, so some Dems. feel Hillary would not continue the fundamental transformation of America.
Hillary has sucked all of the oxygen out of the Democrat presidential room. A number of Democrats would certainly have announced intentions to run for pres. by now, except for this waiting game for Hillary to announce.
Though Hillary isn’t as popular as people think, people are still afraid of getting on the wrong side of the Clintons.
The don’t want to destroy America. It’s their cash cow. They see themselves as Augustus and Livia.