defender and helm of the saint 14 is really useful. it blinds enemies in the bubble and you can drop it in doorways when enemies come out during strikes and just beat them to death or shot gun them while they are blind. It's super useful. Get an armementariam chest plate and it gives you two extra grenedes. As for grenades. They aren't the best but something useful is, in pvp specifically, to throw the lighting bold against walls not the ground because it's damage patter fans out. When stuck to the ground it's easy to run around. But if you stick it on a wall right next to a flag it sprays out over the flag and the other team struggles to get near the control zone without dieing. The titan smash is useful on story missions when you don't need to get close but is a huge risk if there's the modifier that does extreme melee damage. That being said it can be very usefull if everyone in is generating orbs. Because with enough you can almost have endless supers. People love your weapons of light. It gives a multiplier on damage to any teammate that pass through your dome. Breath for strikes and having your whole team dealing bonus damage.