Warden Balance

Hello, im a DM who uses a lot of homebrew, and because we have so much of it, i often need to look deper into the homebrew and balance acorrdingly.

Looking into the warden i stumbble upon some issues, that i hope someone can clarify for me.

My understanding is that the warden is some kind of Third-Caster class, or half-caster, if u want to compare it to a dnd base class.
I know some people will say that im wrong, because the class doesnt have an "Spellcasting feature", but if all your subclasses gives you spells, and free spells, and the flavor of it is inherently magical. The class fundamentally uses 3 stats (STR/DEX to hit, CON for HP, WIS for Spellcasting and features) making it more akin to the ranger and paladin, that the barbarian for example.

So having defined that, here is where the problem starts for me.

1st- The Spellcasting

The spellcasting of the warden progresses inusually to any other class or homebrew i'ever seen, it only reaches 4th level spells but progress them faster than any third OR even half caster class.

That is kinda crazy 4 me, i dont think it needs that kinda power on top of the one it alredy has.

2nd - The A.S.I.

The warden gains one adittionaly A.S.I. in comparassion to the usual 5 (4, 8, 12, 16 y 19) most classes have, the only classes that break this exception are the Rogue with one adittional at 10th, and the fighter with 2 adittional A.S.I.

I dont see why the warden needs an adittional A.S.I., and dont understand it since the only classes that break the rules are pure martials.

So thats it for now, i also think that Primal Interdiction is a bit strong compared to other defensive features across the board from DnD Base and Homebrew in general, but that wasnt the point of the post.