I know this isn’t toatally what you may want, but i have not tested it, but i am about too theory craft it.
basically, you can use the universal barb mechanics, like Stun for example, an see if by using those mechanic that are not Dust devils or earthquakes etc. and see what might work, daze could be another to add.
I have begun building a frost hota LH barb and so far its fun, Idc if my characters reach T4 though so.
something you could try perhaps.