Why does all mastering software look like it's from 2003? I really don't understand. I do most of the 'heavy lifting' mastering in my DAW, export the 24-bit WAVs, then use this software to create the fades/track lists and create the various versions. It does the job, but it's not fun to use - it's a very ugly bit of software with strange, unintuitive ways of doing things, but it's paid for itself many times over and hasn't crashed on me (as far as I can remember). It's pretty good for creating vinyl versions, DDP, and exporting regular WAVs.
I wish there was a way to batch export e.g. a 24-bit WAV master 16-bit, and MP3.
I haven't tried actually using many plugins inside of the app and actually mastering EPs/albums in one place, but the software is so ugly, I'd rather not!