I think I'm in the same boat. I enjoyed season 6 more. And so far Season 7 has been ok. The only episode I've
really liked so far is Rock Solid Friendship.
I havn't seen A Royal Problem yet though.
edit: Seen it now.
A Royal Problem
I liked:
-finally get to see the princesses get some exposition

- good sense of humour to this ep
-
- Sunbottom Tyrant's voice when she said "Excuse me?" So sassy XD
Disliked:
- Painfully slow start-up
- Troped premise (but it fit well, so yea, cant complain too much)
- Starlight (bleh) is heavily featured
- Bookworm Hoers has been getting flanderised a lot this season. Her freakouts are fun to watch, but I worry it could start to get old soon. Especially with Starlight hogging all the character development moments =p
Overall, I thought it was a decent episode with enough laughs and fun to keep me entertained.
7/10