What characters would make the most sense to add to my current roster?

•Basically, wanted to know what character would slot in with my current roster.

•Sorry for the amount of pictures. Thought it would be easier to show the stats for each character.

•Shore keeper and Verina both share the same echo set.

•Augusta feels like the character that would make the most sense, but I would like to know how much I would have to invest in her for sequence nodes and if her signature weapon is required.

•Phrolova has always been a character I wanted, but don’t know if it makes any sense with my current roster

Any help/advice will be greatly appreciated. Thank you.