Egi Assaults, assuming caster pet scaling, are approximately on parity with Ruin III while giving Further Ruin for the upgraded Ruin IV. Using them will just be prior to Trances in general for movement &/or weaves. Being instant allows them to be used in the new opener prior to DWT, delaying it more suitably to typical Trance timings.
Outburst will be changed to 90p. It's a gain for content before Lv. 78 vs now.
They also fixed Demi-Bahamut's inability to Wyrmwave immediately after being summoned.
Please do go over the listed changes in the notes and in my digest. Saying they didn't do anything to mechanics fighting amongst themselves is false.