MMO will need to have huge budget if you asked me. Larian is not a huge team and not really a rich dev. It's hard to compete in MMO as well as now the big thing is the MOBA and no longer MMO. WoW has dropped half it's subscribers in a short time from 12M to 6.8M if not mistaken and it's probably still dropping as we speak.
I would hope Larian to work on something else than MMO seriously.
