Multiplayer of any sort would unfortunately require a totally different game i.e. not turn based. Single 1v1 duels might not be quite as arduous but would take so much technical resources as to just not be worth it. Anything multiplayer is a massive technical headache not to mention a major design nightmare so its not something that can just be added as an afterthought.
That being said, a future project with a multiplayer focus and with shortish proc-gen runs with some kind of slow persistent character development is definitely something I've being thinking about for years.