go for warlock first, why? Fire born perk. once you maxed out your sunsinger class you can rise FROM THE DEAD. not only EXTREMELY helpful for when your teammates die, but when you're the last one alive too. don't have to worry as much for the "What if I die??" or "What if he dies???" now you can relax a bit and tell people "don't worry, I have my super." or if warlock isn't your style, Hunter Nightstalker class is a VERY GOOD support class. create alot of orbs to regenerate Warlock and Titan supers. bonus for the invisibility perk that can turn other invisible too. (blade dancer too; invisibility perks and the super can also turn you invisible if you have the right layout.) Titan, well Defender would be the way to go. create a shield to protect allies and boost their weapon damage stats, shield stats, or armor (most people go for weapons of light or blessing). I base my game play with my fireteams. so how your fire team is, maybe that's how you should roll. you can always make all 3, but which comes first? that's for you pal.