If either Johnny Thunder or Wildcat teamed up with Judomaster, it could be a great episode if ever done right. Or the three come together out of the ordinary, for instance lets say Wildcat is holding up a training session at the Watchtower as those were his duties in the episode The Cat and The Canary before leaving them to compete in a Meta-Brawl held by Roulette and eventually quit after seeing the dangers of it when he faced Green Arrow. Anyways, in walks in Judomaster and Wildcat asks if he'll take up a few kicks on the punching bag with him but then ends up knocking down Wildcat and reveals his true potential. The two become close allies when they're being sent to apprehend and stop a newly found threat, and Johnny Thunder enters as he's told he'll be accompanying them with his genie Thunderbolt. That's how I see it being done, as for villains maybe Mordru or Ultra-Humanite?
