I've been mulling over multiple ideas in my head whilst leveling and I remembered a mechanic that Fire Mages had implemented for them in World of Warcraft during a period when they struggled with a similar issue of relying on Crit Chance.

The model was pretty simple and I think it might fit for the Monk:

For every weaponskill critical hit that doesn't proc Deep Meditation, it could add an additional 10% Crit Chance towards the next weaponskill (obviously capping out at a 100% chance) and then reset back to the baseline 50% once that stack/DM proc is acquired.

Would love someone else to chime in and theory-crunch some numbers/balance based on this idea.