What dps should I learn?

I am a champ ultron,Adam,Jeff and Deadpool player. And I'm currently close to mantis champ. It suddenly dawned on me that I'm THE triple support merchant. Despite me being able to use all of these in double support well, I'm also well aware that they are stronger in triple support comps. So I'm thinking about whether I should learn more supports to become a support main, or learn dps so I can swap off my triple support to a dps if it gets countered. And if so who should I learn? I play mr fantastic for dps currently and I used to play iron fist. And I've currently been really enjoying magik. Rank is eternity.