Everything you said makes no sense. Hunter melee has better range than Titan, but worse than warlock. Special melee for gunslinger is the only ranged special melee (which makes it not a melee, but w/e). Armor and shields are sacrificed in favor of mobility, you must adjust accordingly. The "invisibility" is extremely useful in control, even people that know what to look for will run right by me at times. As far as grenades, the first one in each subclass causes heavy damage if placed properly, whereas the second is more situational (flushing out campers). Sounds like you'd be better off choosing another class though. Titans ridiculous amounts of shielding frustrates me at times in PvP, but not because they're OP. People are just using their given abilities properly, and I expect them not to bitch when I wipe the whole team because they thought they were safe in a defender's shield.