If your gonna fuck a pig, go full hog or not at all.
I dislike fan-service that goes against the tone of a scene. Nothing pisses me off more then a dramatic moment or reveal being ruined because I was supposed to focus on anime tits at the same time. That's part of the reason I skipped out on fairy tale.
For me to tolerate fanservice, it either needs to be tonally consistent, or get straight to ecchi level with nips and all. If your gonna ruin your own pacing with fanservice, being all coy and tone the sexuality down just makes your anime shit to watch and shit to wank at.