Patch 5.35 upgrades the Skybuilders' 475 tools by pretty much the expected amounts, with one exception. Here's the cooking mainhand by stages (no melding is allowed on any iteration):

Dragonsung Frypan; starting tool stats from the earlier origination process:

ILVL 475
CFT 770
CTL 421

Augmented version, one stage of the 5.35 upgrade:

ILVL 485
CFT 794
CTL 434

Final Version, now named "Skysung Frypan"

ILVL 500
CFT 830
CTL 455
CP 6

The final version's addition of 6 CP is almost certainly a nod to the standard tool penta-melders, whose general review of the 475 tool without such was approximately, "poo."

The 500 tool is certainly competitive, and can be used in most cases interchangeably with a penta-melded Aesthete 490 Frypan. That said, the hassle of getting the 500 is there.. so it comes down to which hassle does the crafter want.. omg the horror of crafting Aesthete's hooked to penta-melding, or omg the horror of the Skybuilders' Scrip currency hooked to the trip through the Oddly Specific maze.

I still don't see a reason for the existence of these M.H. alternatives; but then, my Lalas don't let me out much... Are there any items which can ONLY be crafted via Dragonsung mainhands, that are worth a hoot?

In the end, for me, this item is trailer queen and will likely remain so. Shame really, the creators could have had SOOO much fun with it, like, one time in a hundred or so, an item crafted with a Dragonsung MH has +20% more stats, permanently. Boom, there it is. Now THAT would be fun!

Shooter