Automation for buses, Master and every effect setting, Audio Units included, with faders and knobs that move along (6.1.5) and volume lines that are the level itself (6.2); clips stretched to a new length at the same pitch; and the app tells you when there's a new version.
Noise reduction, spectral editing, a loudness report for delivery specs, FLAC and Broadcast WAV export, and batch processing: the tools for finishing audio, not just editing it.