In my opinion, it has been worse than Season 5, for example...but the last 15 second give me reason of dying of watching Season 7 right away.
First, the whole Dexter-Debbie romance thing was stupid, ridiculous, I'm sorry, I think writers passed the line with it. I don´t get it, seriosly. O_o
Second, after the twist revealing that Geller was actually dead the show fell through... the duo Geller-Travis was scared but not only Travis.
Thrid, the last 15 seconds should has happened in Season 5 when Debbie was about to discover Lumen and Dexter together in the last episode.
The positive thing is that the show opens a new scenario with Debbie watching Dexter killing Travis. Producers have already said that Season 7 will started when Season 6 ended... so I guess we'll see how that scene ends.
Other positive matter is Debbie. She's been the best character of this season and I'm glad for it.