I love action combat MMO's (I think that Black Deserts combat is the best in that genre) *But* with that said, I think that with the new changes to the classes and battle system in SB, it would be for the better to keep the upcoming SB combat. Pre-SB I think i would've preferred a more faster style of combat, but with the new mechanics of each class to differentiate themselves the SB system may be the best choice.

As for a comparison I saw, regarding WoW and this game, the older version of WoW and FFXIV (pre-sb) were very similar, but currently, WoW seems to be moving almost like a tab target/action combat hybrid style system. It's far faster paced than before (more spammy as well).