From the looks of it, they just made everyone and everything super powerful from the get go. Even the GRD freeze after a CS was added after several characters could infinite with multiple CS's constantly resetting hitstun scaling. They also nerfed CS's into only resetting hitstun scaling if you used it while having half the GRD gauge or more, but even though Chain Shift was one of the worst aggressors, it wasn't the only source of shenanigans. The list of things they can do is long, EXS gain cooldown (or they could freeze it after you use a Veil Off or IW in the same combo like with GRD and CS), notably increase hitstun scaling (my personal choice of what would be best, even though several characters would need moves reworked to support the shorter combo system), add a gravity mechanic similar to MBAACC's, add either a dedicated Burst mechanic/gauge or go take another page from Melty's book with Circuit Sparks (or EXS, GRD, GRD Vorpal-burning equivalents). This upcoming version update has a lot of potential, but we'll see how much they're willing to take back to the drawing board.
For the record, the game doesn't need ALL of these things, but one or two of them certainly wouldn't hurt.