Garthanos
Arcadian Knight
One item at a time ... that's a dramatically different frame.@Garthanos
While you are designing the Monk.
Maybe also tweak the official Monk?
Basically, too many specific features are baked into the base class, leaving little or no room to flesh out a related subclass.
For example, I would like to see a Brawler as a martial Monk archetype, that fights weaponless or with improvised weapons. Basically a combination of bar fighter and mixed-martial-arts fighter, with some athletic stunts in the mix. Heh, this is definitely a nonmystical kind of Monk.
And so on.
A cleaner base, would make more room for other Monk archetypes.
Oh I looked some at the 5e monk class it does have a very baked in aspect to it.