Deflect Missiles (Defense against ranged attacks)
Evasion (Defense against the most common AOEs)
Stillness of Mind (Defense against charmed and frightened)
Purity of Body (Immune to poison and disease)
Slow Fall (Defense against being knocked off a cliff to your death)
Diamond Soul (Defense against 4 more saves)
Empty Body (Invisibility, Defense against damage)
These allow monks to get at ranged attackers who are not sitting in an empty parking lot with a target painted on them.
With Sharpshooter a ranged character can get to ranged attackers hiding behind a a window. And many of these defenses... well.
Deflect Missiles is good, as long as the ranged attack is a weapon attack.
Evasion is something that Rangers can get, and it is only a defense if targeted with the AOE. You may also be able to avoid it by being in melee with the enemies allies.
Stillness of mind has a fundamental flaw, in that the worse versions of fear and charm will not allow you to take your action to counter them. It is also a bit odd to call this a defense, because it is a way to cancel the effect on your turn, not prevent it from affecting you.
Purity of Body was removed.
Empty Body no longer grants invisibility, though it does provide the elemental resistances. It also costs a good percentage of Ki.
Slow Fall is not a defense. Or if it is, it is so minor it isn't worth discussion.
Diamond Soul is very good, but has two flaws.
But, let's rearrange these for a second. What are the Monk's defenses against ranged attackers?
Deflect Missiles.
What are a Monks defenses against spellcasters?
Evasion
Stillness of Mind
Diamond Soul
Empty Body
Okay, so Monks are great anti-spellcaster PCs from level 1, right? Well.... no...
Evasion is level 7
Stillness of Mind is level 10
Diamond Soul is level 14
Empty Body is level 18
If we assume the game ends around level 9.... then the ONLY thing making monks particularly good against casters is Evasion, maybe you might get stillness of mind, but you will almost never get Diamond Soul or Empty body. And I don't know any fighter who would dismiss getting Evasion. And Rangers can get evasion, some of them can even get counterspell (monster hunter)
And the monks lack AC and HP, to survive being attacked by weapon attacks that aren't ranged. This conception of the monk running across the battlefield to do lone battle with a mage or archer really doesn't happen, practically, and there are a lot of ways that monks CAN'T do that. For example, what if the caster or archer... is ALSO skilled in melee? It isn't like that never happens. Erinyes for example have a devastating bow attack, but can ALSO fight incredibly well in melee.
So a low to mid level monk... doesn't have much of anything defensively.
Whether these
seven defense abilities are sufficient for how people want to play monks in 5E and how DMs are running things in 5E, I can't say, but they absolutely have a toolkit that is intended to be sufficient for specific playstyles established rather bluntly in their original showing per Snarf's thread on their history:
https://www.enworld.org/threads/mon...uestionable-future-of-an-iconic-class.698616/
If this is supposed to be the monk's playstyle, why can't they access it til late game?