I went with my usual Firewall build in S5. Got to WT3 after 3 hours at level 45. I feel Firewall and Burn is slightly stronger. But it’s hard to quantify. Nothing ground breaking yet so far.
One gotcha is that Sword of Verathel which I got early on. If you don’t have mana, you can’t even use your Basic skill. I thought it meant when you have the resource it will use that and add dmg. But if not, it goes back to a normal attack.