Actually, light's spike dmg isn't that good. They were good for the last dummy 'cos they can burst often and so over 15T, lots of smaller bursts add up to more dmg than bigger but fewer bursts of other elements. This time round, the fast bursting isn't helpful at all.
Yeah, I'm an example of that. I haven't even opened the dummy event yet. Still farming guardians, and gonna try to finish the new raid event first then hopefully do all 6 elements on Sunday