Update on Krater:
Load times seem excessively long.
Also appears that you don't get to select new skills, at least not yet anyway. I'm level 4 on each of my characters in the party and I can add implants and boosters to increase stats or skills, but no new skills yet that I can see.
You can buy some crafting materials.
Looks like there is at least 1 other class, a slasher, as I found a weapon that is for slasher only and none of my current party can use it.
There looks to be an inventory slot that has a bottle and a gear icon on it, but not sure what this is for yet. Edit: this is for gadgets. Just got a grenade that I can slot in there. Not sure if it's 1 time use or not. It added an extra hotbar slot though.
saving appears to be done when you exit the game as far as i can tell. I quit the game inside the 1st "dungeon" and when i logged back in, i was back at the main town.