working on my mystic based on ideas here.
I took Unarmored defense and rewrote it and renamed it. (Paraphrased from memory)
Patient Defense
You can use Dex or Str for AC, + wisdom if Unarmored, and you can use a shield regardless.
As a bonus action on your turn, you can take the Dodge Action. You can spend 1 focus die when you do so, to gain temporary hit points equal to your focus die result plus your wisdom modifier.
(I had changed the class to a d10 HD, but with this and another change I might change it back)
Next, I took martial arts and rewrote it.
[Mostly the normal stuff, minus any “no armor” requirements, the MA die becomes your focus die, which starts at 1d6 (d8 if fighting totally unarmed) and upgrades at all the same levels. I stole the unarmed strike rules from the UA playtest, and gave the monk the ability to use two functions of the unarmed strike with one attack, once per turn.
The description makes clear that your unarmed strike can be truly unarmed, or it can be a pommel strike, hit with the flat of a blade, part of a 1-2 combo with a weapon, or whatever other quick, light, precise, strike you can think of.
Flurry of Blows. As a bonus action on your turn, when you use the attack action or use an action to spend focus dice, you can make a single unarmed strike as a bonus action, or spend 1 ki to gain 1 extra unarmed strike per turn until the end of your next turn, including as part of the same bonus action used to activate this ability.
Then I added to level 1 Focused Breath
You gain a number of focus dice equal to your mystic level plus your wisdom modifier. You regain these when you complete a long rest, or when you spend ten minutes in meditation, which can be done as part of any rest.
You learn 4 Focus Techniques of your choice from the list at the end of the class description, and gain an additional technique at every new mystic level. You can also learn new techniques during your adventures, which can include techniques from other classes, so long as you meet the requirements and can find someone to teach you or a manual of techniques to study. You must prepare techniques by spending part of your long rest moving through the training forms of that discipline, and you may prepare a number equal to half your mystic level plus your wisdom modifier.
Then at level 2, you gain Slow fall, Focus Regimens, and Deflect Attacks. 3 is subclass, 4 is feat,
5 is extra attack, one of two special meditations (stunning strikes and powerful strikes, medituations being techniques you do outside of combat that give you an ability for an hour to several hours), and the “magical attacks” feature.
Level 6 is Deflect Magic, upgrading Delfect attacks to include spell attacks.