Spirit Surge is quite obviously meant for utility in low support situations, not for raw damage.
Dust off your damn DRG/WHM and get to soloing.
I have probably used spirit surge's hate removal tool.. twice.. since its conception years ago. Jump's effect under spirit surge is worse than angon, high jump is alright but without fly high it's not really going to be useful more than.. once, twice at absolute most.
getting rid of the wyvern is actually a massive detriment to
actually using healing breath, remove paralyze, remove curse, but it does help in that there's no flapping sound when idle and the wyvern doesn't get in the way of other people
tl;dr: Spirit surge aside from fly high + spirit surge to be effectively (worse? equal?) AC Mewing is a cool way to get a heal for the master.
And I prefer /RDM. lower MP cost with barspell, and the FC is nice too.