I'm already tending towards quitting.
If the game does not get more interesting by the end of Dawntrail, I will not buy 8.0 and unsubscribe instead.

Currently housing is the only thing preventing me from leaving. If I unsubscribe, my house is gone. And if my house is gone, I'm not comming back. Losing my house is a deal breaker and because of that, I'm not taking a break even though there is currently nothing interesting for me to do. I'm basically paying a housing subscription at this point ^_^.

This also means that I will not come back if all my designs and all my housing items are gone.

I don't believe their 8.0 Liveletters can tip the scales for me, considering how recent announcements of features were hyping up disappointments during the last few Liveletters. So Dawntrail and what I can see and experience is all that can convince me to stay or leave.