I personally like both Tokyo Ravens ("X-encounter" by Maon Kurosaki ) and Strike the Blood's openings myself.
Early 2010s was good year for opening (and anime) before things started getting budgeted to death.
We still got good shows in 2017 but not as good they could have been if they had better staff and being better funded.
Next season has some stuff coming up that looks like i will give it a go. I didn't include everything coming out.
Television wise
- Black Clover - Magic Fantasy
- Seven Deadly Sins (returns, not sure if it's series or ova)
- Overlord II
- Death March kara Hajimaru Isekai Kyousoukyoku - A guy sent to fantasy world sort thing. Still looks promising
- Grancrest Senki - Fantasy Action
- Beatless - Scifi / Action - Androids become part everyday life by 2105. Story centers around a boy who suddenly find himself with androids going crazy and he trying save his friend, hiE (female android)
- Dagashi Kashi 2 - Comedy - Candy crazy crew returns for second season.
- Darling in the FranXX - Scifi-Mecha
Alot old favorites are coming back as films, Full Metal Panic's first season is done in 3 movies Director's cut...but i'm not sure what to make of that. Code Geass is getting couple films as well. Love, Chunibyo & Other Delusions movie is also coming out in January.