Why not just wait for bonerlord and/or prepare for a possible successor to crpg over there? I know without an official release date it's still too early to start, but we're definitely close to the finish line and trying to revive crpg just seems off now.
Also, if you really wanna bring this back, stop worrying about too many modes. Make battle great again and leave the rest behind. Siege and Strat revivals are way out there, imo. Especially strat will be boring as fuck without a couple hundred players.