You can pickup and throw people. Reason enough.

Free attack? OP much? That as bonus action is fine enough.

The whole point of dual-weilding is that you get to use bonus action for extra attack for free without feats or anything and two-weapon fighting has nothing to do with what you ask. Ofc, the whole dual-weilding won't fit well with a specialization that already gives you a way to make use of bonus action for attacking anyway.

That's life.