So effectively giving the best of both worlds (Syn Sin/Batman Enemy and Defenders/JSA). 4 points might be ok, but given the prevalence of cheap special objects, relics, and resources, it might be too big an investment, depending on the team set-up.

a nice alternative to the other Defenders TA. the best use i've gotten out of it so far was on DP Black Cat on a Spider-Man Family keyword. it comboed nicely with Spider-peeps from the SFOSM set: most of them push to an 11atk on the second click and hopefully you roll for the trait.