There's a couple interesting ones, but I find the vast majority create similar effects or just boost stats. But imagine if there was a data disk that lets you use two leaders, or a data disk that brings a sixth team member. Even if those would require a lot of slots 6+, it would be fun to theory craft. How about if your characters can ignore taunt. Or a Chimera like ult after so many turns. I'm just saying they could make the game mode more interesting. Instead we get to see potency calibration and insatiable for over a year.
Any hypothetical data disks you think would be interesting?