Crossword Puzzle Increase the angle of elevation

Clue: Increase the angle of elevation

Angle (and a three-word hint to this puzzle's theme) (FISH with 4 letters)
Increase an auction offer (REBID with 5 letters)
Theater offering (e.g. DRAMA with 5 letters)
Theater offering, sometimes (DRAMA with 5 letters)
Theater offerings (e.g. DRAMAS with 6 letters)
Movie theater offering (FEATUREFILM with 11 letters)
Theater box office choice (BALCONYSEAT with 11 letters)
Increase the angle of (STEEPEN with 7 letters)
Increase one's offer, as in negotiations (SWEETENTHEPOT with 13 letters)
Aggressive policy to increase box office sales? (TICKETOFFENSIVE with 15 letters)