Less time dedicated to shite like Danny being boring, or sand people, the better.
Dany will be boring during all 80 minutes now, though, since she's one of the focal points of the whole show.
80-minute episodes are fine, I for one didn't have any assumptions about 90-120 minutes, so I'm not disappointed. If anything, it's better than what we had during season 7: 60 minutes of teleportations and stuff. Although there were rumors that teleportation exists in season 8 too, so... who knows. I feel like they're rushing the show because they are tired of it. They could probably do 10 seasons with 10 60-min episodes each, easy. But they didn't want to, that's my take.