Seems to me that the constant hitting of her ad ratios have only caused Lethality to come out as the dominant build path. Briar was meant to be a brusier diver like Vi and Jarvan IV, it’s unfortunate that her intended playstyle is being overshadowed due to a numbers issue.
I suggest maybe adding a health ratio scaling on some part of her W so that it becomes less effective with pure lethality builds possibly pushing her toward the brusier playstyle.
Vi and Jarvan go for lethality when either the items are strong or their brusier choices are weak. J4’s best build by far is brusier, so was vi’s then all the items she uses got nerfed and she pivoted to lethality.