Similar to this question with more specifics added.
If one is mastering a release for vinyl, each side of each disc should be contained within one Project but on different tracks. Different manufacturers have different maximum program lengths so this should be an adjustable variable in Project Setup. Define disc size (7", 10", 12", or custom), A side vs B side, multiple discs etc.
Would it be too much to have each Project have multiple formats? A generic 'digital' format as well as Soundcloud, Bandcamp, iTunes, CD, Blu-Ray, vinyl, cassette (specify A/B side, program length), etc.
Perhaps at the top of the screen next to the "digital release" buttons you would be able to switch between the different formats. Needless to say each format page would have its own metering settings. Vinyl specific metering, reduce stereo width for bass frequencies? Don't tempt me with a good time!