Gameplay balance is important to me and many of the abilities have gone through many iterations to make sure the Warden Class is not over or underpowered. Do let me know what you think needs balancing. I've played this class in Legend difficulty most of the time.

The main idea behind the Warden is to provide a flexible soldier class which can cover many aspects of a fight.

But the way it handles all those aspects has to be different so that it is not a direct replacement of another class. Here are some of it:

Utility:
You can set the Warden up as a cover denial unit like the Grenadier with abilities like Half-Sword and Warden's Tide without destroying the said cover but pushing the enemies back. The catch is you won't be able to that without leaving the safety of your own cover.

Damage:
Standard shots are not turn ending like the Skirmisher. Melee attacks are not turn-ending either. So far it looks pretty bonkers.

However every single melee attack causes the warden to change stances and you do NOT have access to ranged attacks in Defensive Stance. Considering you always start your turn in offensive stance you cannot go melee an enemy and shoot them point blank in the face. To be able to that you'll need to somehow start the turn in Defensive Stance and the Lieutenant level ability Premonition is the only ability which allows you to do that. It is on a 3-turn cooldown so its not spammable.

You can first shoot and then go melee an enemy as long as they are 1 Action Point distance away from you. Which does respectable damage but leaves you out in the open. And enemies almost never start 1 Action Point away from your soldier, you need to set that up exclusively most of the time and its a fitting reward in my opinion.

Mitigation:
Foresight ability works similar to Templar's parry or Ranger's Untouchable however yet again there are some differences:

Foresight creates a shield around the Warden. The shield's strength is equal to the Warden's max health. (give you a bit more incentive to get better armors) It gets destroyed after taking any damage. This means the Warden does not cause the incoming attack to miss. This means you are still vulnarable against special attacks like Viper's Bind. However it also means that the shield does not get destroyed if an attack misses you.

So its at times more reliable than Ranger's Untouchable but other times less effective like Templar's Parry.

Notes on Perks and Balancing the Class:
Wardens don't have access to Run and Gun or Rapid Fire. However they do have access to Premonition which provides a unique effect which is quite flexible in terms of what you can do with it.

Consider a Lieutenant Warden:

We start the turn in offensive stance. Now if we go and melee the enemy that will put us in Defensive Stance and we won't be able to shoot and only use defensive stance abilities. However if we use Premonition at the beginning of the turn we'll be in Defensive Stance. Now if we go and melee the enemy we'll end up in Offensive Stance and we'll be able to shoot them at point blank range.

The example is very simplistic however it demonstrates what you can do with stances. Now think of every other ability you have access to. You essentialy have access to a far more flexible Rapid Fire which can do so many things:

-Increase your chances to hit and do more damage with Unwavering Concentration and shoot from the safety of your cover.
-Unbalance the enemy causing them to take more damage in one stance and then knock them back and disorient them in the next stance before ending your turn etc.

I've balanced the abilities in such a way that you will only come close to the damage numbers of a flanking Ranger with Rapid Fire (and that is done with Warden's colonel level abilities). However now you have the option to do less damage but apply additional effects on a 3 turn cooldown.