Beornings just don't have many options in legacies. They suffer from having imbued legacies with ratings designed for level 100 stat caps, but with level 130 stat caps those ratings fall behind massively. My suggestion for your friend is to start with the following swappies:
LI 1 -- (Unimbued) Carving of the Third Age -- "Fear/Rush Duration Swaps"
- +10 Rush Duration
- +4 Grisly Cry Fear Duration
- all others optional/unimportant
LI 2 -- (Unimbued) Club/Axe of the Third Age -- "Durations Swap"
- +10 Call to Wild Duration
- +10 Thickened Hide Duration
- +6 Bee Swarm Debuff Duration
- all others optional/unimportant
For healing, you can get away with a crafted 1h axe (crit chance) for your main hand. Tanking gets a little bit more value from a legendary, but only a little. I would use the following weapon legacies for healing/tanking:
LI 3 -- (Imbued) 1-handed Club/Axe -- "Healing/Tanking"
- Bear form damage
- Bee swarm damage
- Bee swarm critical defense debuff
- Chance for attacks to return wrath
- Relentless maul damage
- Vigilant roar damage
- (This last spot can be anything, vitality, might, even Turn the Tides damage if you're picking it up from red tree for some reason)
For dps, you arguably could increase your DPS by swapping between using a 2H weapon for bearform and a 1H weapon for manform, but for the sake of simplicity I just recommend the following:
LI 4 -- (Imbued) 2-handed Club/Axe -- "DPS"
- Bear form damage
- Bee swarm damage
- Bee swarm critical defense debuff
- Chance for attacks to return wrath
- Execute Damage
- Relentless maul damage
- Turn the Tides damage
Since execute can only be used in bear form, the only difference between your 1H tanking/healing and 2H dps weapon is whatever runes/relics to slot; so if its all crit rating or offensively minded things in your 1H weapon you can use it for your man-form swappy in redline.
As for class items, I'd suggest
LI 5 -- (Imbued) Carving -- "General item"
- Bond of Trust Heal Chance
- Chance for bonus wrath from slam
- Healing Potency
- Hearten Heal Strength
- Man form damage
- Vicious Claw Damage
- Thunderous Roar Cooldown
This one can be broken down into multiple class items for each tanking/healing/dps, but the difference between each is really small.
In Blueline, if you trait deep enough into redline for Composure you don't need the "Healing Potency" or "Hearten Heal Strength" legacies because they don't affect Composure (the traited version of Hearten), nor do you need Bond of Trust Heal Chance, so you could replace those 3 legacies with stat legacies (lol...) and/or "Cry Damage"/"Bear form critical defense" legacies.
In Redline you have the same issues as above, in addition to not needing Thunderous Roar Cooldown legacy.
In Yellowline you can replace Thunderous Roar as well, but there isn't really a great thing to replace it with.
Just to keep it simple for blue and yellow builds only, you can probably get by with just the LI 1 and 2 swappies at the top and LI 3 for a real class item. Sorry if I've complicated things here.