I have a setup for my Titan that I'm in love with right now.
Subclass perks: (Forget names)
Weapons(or Blessings) of Light for support.
Regenerating Force Barrier
Stronger, longer duration Force Barrier
Heavy weapon kills generate orbs
Exotics:
Invective
No Back Up Plans
Armor perks:
Max Strength
Void armor chest
Special weapon kills grant more super
Weapons/perks:
Scout - Army of one
Machine gun or sword - to make lots of orbs
Strategy: get shotgun kills with your unlimited ammo to maintain your Force Barrier, make use of your Army of One perk to get your melee back in time for unlimited Force Barrier, use your Heavy for killing groups of weaker enemies to generate orbs, and use your Bubble frequently so you're generating orbs, buffs and cover instead of wasting valuable super-regen.
You'll feel INCREDIBLY tanky, the build focuses on using your shotgun on the front lines, and you provide tons of support to your team with your bubble, buffs, and orb generation.
It's super fun, and I hope you try it out.
Here I was about to type out basically the same thing. The only thing I would change would be to take the perk that generates orbs when your bubble gets hit. With regen and no backup plans you don't really need the increased duration. It does stack with no back up plans but I mainly use it when I'm soloing. If you want to focuses on team play? Generate more orbs, I play with my wife a lot and we two man most strikes with this build and a nightstaker