Okay so I wanted to add some feedback for the "Titan Mauler" Barbarian since I played one to level 17 in 1e PFS and played a level 1 I built in the 2e version last night.
1st off, the fact that the Giant Totem is the only rage totem to have a drawback for its ability is really disappointing. I get to double my rage bonus... so at level 1 I get 4 temp hp (I have con 16), +4 rage damage total by doubling my +2, and a large weapon granting me a +2. However, I am sluggish 1 which means between rage and sluggish I have the following penalties:
AC -2, Attack -1, Dex Checks -1, and Ref. -1. That is a lot of penalty for what I am getting, which isn't much.
Having to spend an action to activate rage is also a bummer. Entering Rage should be a free action. I am not sure if I like the length of the new rage yet. This will be more of an issue at higher levels when fights take much longer.
I think all classes should have the same number of signature skills. Only having three for the Barbarian, why? I could easily see Acrobatics, Athletics, Intimidate, Lore, Nature, and Survival being signature skills. In fact, I think every class should get 6 signature skills but can choose their own 6. This would help vary experiences within classes.
Large Weapons should not double in Bulk. With a 18 Str. I am encumbered at 9 Bulk. If I wanted to go with a Large Greataxe that would 4 Bulk. That is almost half my bulk just for the weapon and if I want two large weapons because I want a slashing or bludgeoning weapon I have hit encumbrance. This forces Titan Maulers to bastard sword as their best weapon for only 2 Bulk.
So far that is all I have for criticism on drawbacks of the class. As for pluses:
I like some of the rage feats I can select such as Acute Vision. Taking the Natural Ambition Feat to get Toughness is a must for me.The damage output seems pretty good. My Titan Mauler, while raging, does a minimum of 11 damage on one hit to 66 damage on three hits not including crits. So the damage output is there or can be there.
With three actions I can move really far and still take a swing which is nice. As a Barbarian I can do a lot more than just move and swing now. I can move, swing, use a skill. I could hit, skill, hit.
Sadly the large weapon almost certainly doesn't carry a damage bonus (we just assumed using a larger weapon was a benefit, as it was in pf1). You just get the doubled conditional bonus if you use the weapon while raging.
Ah I see that now. So that actually is another negative to the Titan Mauler Class. At this point there is not actually a great benefit to large weapons except the double conditional mod for rage. Which is extremely lame.
Yep. Spirit and sorta Fury are the only decent totems. Draconic runs into problems later (the 3 round durations eat flight and formshifting), and Fury has a problem in that the barbarian feats are largely bad at level 1, and the DR comes very late and is very low.