I actually quite like the new system. It makes it more predictable when and how easily you can CC someone. You now have to focus priority targets with strong attacks and spells in order to open up their vulnerabilities. This means you have to carefully select your targets in group battles so you can take care of pesky threats and accept that you will have to take damage from the others in order to control the battlefield more easily. You also know exactly how much punishment your characters can take before becoming vulnerable, and plan your movements accordingly. However, this is easy to cheese, especially with how many aoe spells mages can get early on now. With teleport and hail on two characters, it's incredibly easy to take care of 2 or more NPCs or at least leave them frozen if they don't die. Each system has a cheese, but I like this one more for its predictability.