Type Righting
Strike zone? LANE [bowling]
Key for Debussy? ILE
Rocket tail? EER
LAX setting PST
Work on a plot SCHEME

While the theme may be mundane, its clue at 62-ACROSS set the record for length.
Ominous situation DEARJOHN [not sure how ominous such a letter is … my guess is that the recipient may be catching a break]
ENERO RATING:

Three grins = Excellent: Loved it; Two grins = Good: Enjoyed it; One grin = Satisfactory: A bit bland for my taste; One teardrop = Unsatisfying: No fun