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Supers in trials aren't that common anymore, and if you do encounter it then yeah it can be useful. Barricade is also useful for heavy, blocking lanes and revives. Titans are situational useful, but when it comes to how strong a class is in the majority of engagements; Titans are bottom tier with niche moments where they can shine. That's why typically Titans aren't competitive unless they have an OP exotic to carry them
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If you like playing Titan then play Titan. I do because of the aesthetics, but Warlocks and Hunters are way more superior in 3v3. The best thing you can do as a Titan is to use Citans Ramparts in order to take control of lanes.