Obviously Warden Hank is a good. 6 will let you kill everything. But I'd like to comment about what else can he do.
So, I just need to get sure this is correct.
Let's say you run a Dark Horse build. The Resolute - Warden form works against this kind of build since you don't want to have resources to get your +1/+1/+1/+1 at any time unless you find a way to burn your resources earnt by blood (Dig Deep and Scrapper are a thing).
So, let's say you decide to go into your Resolute - Assistant form. While your Dark Horse bonus is activated, you are at a pretty 4/4/5/5 and when you suffer Horror you draw cards. This statline is so so neat and you can flex with this. Later on the campaign of course you will get Charisma + Jessica Hyde + Peter Sylvestre and you will sit in a nice and comfy 5/4/6/6 while both are in play.
If I'm correct, in later stages on a campaign Hank will be basically inmortal and he will be able to do as he pleases with the game, since Mythos cards aren't a thing for him anymore, you will be able to success at hitting things consistently with Fire Axe, and you can add clue getting to your team using Mariner's Compass.
Oh, wait, you can trigger this item's up to three times? Then God have mercy, forget what I said about Warden Hank not working with Dark Horse. Let's say you end your turn with 0 resources. In case Warden Hank suffers damage before your turn starts or via Spirit of Humanity, you get 2 resources thanks to his and you also get your upkeep resource. You will be able to investigate with Mariner's Compass with your lame base 1 . If you use this 2 resources + the upkeep resource, you get a +3 and, on top of that, your Dark Horse bonus. Warden Hank can investigate at 5 getting 2 clues once per round as long as he has suffered damage before the investigation check.
Maybe I'm too overhyped about this, because there are way easier options to get clues with low survivors not involving janky combos (for example, using Old Keyring in 2 shroud locations while leaving big clue getters doing their job in harder locations). What I'm trying to say is that Hank using the Dark Horse engine looks fun and consistent. Depending on the scenario, a Dark Horse build should let you get in either Resolute form and you can still get the best of both worlds. Assistant Hank will better in scenarios where you need to get more clues, still kicking any enemy in the butt when needed while tanking damage/horror for other investigators. Warden Hank will be more consistent in scenarios where there are more enemies because of better values and ocassionaly, if you have your setup ready, as a reward of doing your job tanking damage, you can get 2 clues.
Can Assistant Hank exist without Dark Horse? We know Warden Hank will always have a place as an aggresive tank because of having the biggest printed yet in an AH investigator, but a 3/3/4/4 statline, while looking pretty needs some work. Unless you are a investigator, you lower difficulties with some cards like Gumption or Old Keyring, you are just lucky or you live and learn from your mistakes. He will be consistent because of this , allowing him to draw many cards during the game.
Hank is good. You can build him to suit a ton of groups. Obviously he will have a better time dealing with enemies while tanking stuff, but he can flex if the group and/or the scenarios require it because of his overlooked Assitant Resolute form.
Sure, flavour-wise he isn't as neat as the other investigators of his expansion, but the other investigators are just so neat in this regard, Hank Samson doesn't care, he will just survive everything.