I don't think "Increase Gauge by 50" is an "interesting" mechanic.
They basically took the trashy mechanic away from RPR/MCH and was like "Wait, let's give it to Dancer... the job who's gauge generation is very spiky as is"
The issue people have is Dancer's Gauge generation is extremely random, you can be at 0 gauge and next thing you know you're at 50.
Tillana was better when it refreshed Standard, removing that mechanic also nerfed Dancer in level 90 ultimates.
Also - They could keep this gauge granting mechanic by adding 1 simple mechanic to the "Enhanced Technical Finish II" trait
"Increases Maximum Esprit to 150 while under the effects of Technical Finish".
