BCNMs were good for XI at that time. But I feel XIV deserves something more modern and updated.

Faction Leves, while lacking in the challenge are a better idea than BCNMs already in my opinion because you're running around and fighting in the open world rather than traveling to a single isolated room.

Perhaps if there was a device that teleported the party to a mission only area, where you fight a group of hostile enemies in a big area for gil and gear, I'd be highly in favor of that.

As we speak now, I'm sure SE is already creating instances similar to these ideas we have.