I think BandLab's Mastering is a useful tool, especially for development when you're trying to hear how different mixes will process via their 4 selectable algorithms. It may not be suitable for fine tuning a masterpiece, but it gets frequencies boosted for the old 'car radio' test.
I'd like to see Cakewalk include a built-in 'Mastering Module' or something within the GUI (like in the 'Mix' workspace dropdown section) that hooks directly into (BandLab's) mastering options. And further, I recommend that BandLab's four mastering categories (Fire, Tape, etc) be applied variably by sliders, so user can set their own preference for strength of each effect. This DAW unique new mastering interface could really spoil producers with some recommended metering info and visual publishing platform compatibility checks too (Spotify vs YouTube vs etc.. ) It's gotta be turnkey with mix-master-publish..