I think they need to reduce how effective down time is but not too much because that's also a lot to do with Pictos skill expression, the reason why your seeing Picto outperform other jobs in the ultimate's is how it uses that downtime.

Honestly I do hope they don't see this as a reason to change how it plays but going by the track record of viper, ninja and dragoon changes I wouldn't be surprised if we got random questionable changes.

At the end of the day this relates back to the 2 minute meta and how sanitised and safe job design is that a job like pictomancer existing sort of breaks the balance and shows the major flaws yet again with how it limits job designs (similar to how Early EW paladin also didn't fit because it had two seperate weaker bursts per minute), The game is designed around only having burst jobs that can burst inside the 2 minute window.