I don't know who Kripparian is, but I just looked at the leveling guides at maxroll.gg and the Firewall build looked the most fun, and I am indeed enjoying it. What did you not like about it?
It's extremely slow if played poorly due to how damage over time works in Diablo 4. Mobs were constantly running out of my Firewall, I made lots of snapshotting mistakes, etc.
As an Ice Shards Sorc I just teleport into a group of enemies, pop my frost nova, cast barrier and ice shards and everything is dead in a second.