Reforging, enchants and gems can be optimized slightly. Namely, orange gem in chest could be 20haste instead of 20 mastery; cloak enchant could be 22 agi, and he's a bit over the expertise cap which can be fixed with the following reforges:
Shoulders: Remove reforge
Wrists: Crit -> Hit
Hands: Expertise -> Hit
Legs: Hit -> Haste
Emergency Descent Loop: Remove reforge
Signet of Grasping Mouths: Crit -> Mastery
As for the logs, it generally looks good, tho I think his Rip and SR uptimes could be improved a bit. On a static fight like Ultraxion they should both be over 95%, while on your Ultraxion 25H kill he only had 91% on SR and 86% on Rip.