I have to ask, have you played WoW past the first 10 seconds, and if so, can you explain how it's so different to WoW? Watched yet another
video and my impression remains the same as it was prior. WoW with a must slower combat system. The market does not need a system like that, people simply aren't interested in a system where it takes that long to use one ability. Most modern MMO players dislike FFXIV due to it's long GCD and quit without reaching endgame because putting it simply, the gameplay is a bore until you reach max, or near max level. You have a handful of abilities and a few OGCD.
What I personally feel it needs is a combat system that requires actual skill, and no I don't mean TERA, Vindictus, or Black Desert where consist of button spamming (at least the latter two, not sure about TERA at endgame).