Gonna fail. When it comes to the meta of tanking healing dps roles if said mmorpgs do open classes they fail. The games that fail end up changing these ideas back to that meta. GW2 ESO Champions online and many others fail unless they make that change which some do but some don't like champions and it just closes.
Yeah that's what we need an entire generation of shallow MMOs and BR clones with time manipulation gimmick stapled to it