Giving Advantage on every (barb)(intimidation) option, aside from being a bit OP and nonsensical (At the very least, why do Barbs get this bonus even if they're not raging? Plus it's not really a "situational" advantage if it's always applied), is once again repeating the same mistakes/issues Larian has had giving other things constant Advantage - it significantly hampers our ability to further buff those options. Guidance will help a bit, sure, but any spell/ability that gives Advantage on charisma checks is now ~useless for a Barbarian.
If Larian really wants the Barbarian to be good at intimidation checks, they should do one of:
- a.) Allow Barbarians to make intimidation checks with Strength instead of Charisma.
- b.) Give all Barbarians expertise (2x proficiency) in Intimidation checks.
Doing either of these will allow players to retain all the normal options to further buff Barb Intimidation checks through Advantage/other.