The original launch FFXIV combat system, while hilariously flawed, actually tried to be a little different from WoW. Their solution to this was to bring back a traditional (read: boring as shit) combat model based on tab-target, auto-attack, and 12345 skill-spamming.
The reality is that tab-target, auto-attack, and 12345 skill-spamming is dying fast. It's why WoW is actually losing subscribers after all these years (and Blizzard is delusional if they think MoP will bring them back for longer than a month), and it's why SWTOR held people's interest for about 1-2 months tops. It's also why GW2 is failing spectacularly to keep up with NCSoft's hype, because actually playing GW2 is hardly different from WoW or SWTOR or Rift. Actually playing an MMOG these days is basically being subjected to the same shit in combat, and once you know better it's boring as fuck.
The future is in action-combat styled MMOGs, of which Tera is the first really large-scale example though it follows the footsteps of heavily-instanced small-scale games like Diablo, the Phantasy Star Online series, Vindictus, Dragon's Nest, and other games of that style. Blade & Soul is another example of an MMOG with action-combat which just entered beta in Korea after literally half a decade of delays and since it's NCSoft Korea I doubt we'll see it in the West anytime soon. If I were Blizzard I would seriously be considering putting an end to tab-target, auto-attack, and 12345 skill-spam for Titan, because the aging WoW and their increasingly impotent attempts to keep that gravy train going until Titan launches is proof that the traditional MMOG combat model is tired as shit and boring as hell.
Eh, outside of it's aiming reticle Tera has one of the more iffy combat setups in the genre for my tastes. I'd be a lot more keen on it if it did half of what it's fan base alluded that it did.
It's still basically hotkey based, it's extremely stationary and it has one of the more bland class and ability setups I've seen. Doesn't help that it does nothing on top of that with subsystems or resources, the entire thing is pretty anemic. Let's not talk about how much content you have to slog through to get to anything that uses the damn thing.
Personally I really like the targeting, and the game itself is OK because of it and the polish but you need
more than that, of course, they need a lot of things in that game, like to take the entire thing and cut it down to the C-list Monster Hunter clone it wants to be since
everything MMO about that game hurts it. Tera isn't the future of anything in this genre. It's extremely niche and will probably continue to slowly sink from already small beginnings in favor of games that do more things right in all regions as time passes on.
Despite some strong opinions about it, I really can't agree that hotkey input and lock on targeting is a massive detriment to any
PC based RPG genre and that it's killing anything. Personally, I'd say It's more subscription fatigue and samey theme park nature of all the mediocre WoW-likes, that and the fact that outside of WoW's MMOs never really were
THAT popular, I mean back in the day 500k was a HUGE playerbase, then all of the sudden people think they can get the 10 million Blizzard has and draw out hype and budgets big enough to sink a company.
I think the next few years will focus on variations, like Guild Wars 2 and even FFXIV, and maybe a return to sandbox features, myself. That is if people actually catch on and stop trying to to make make people quit WoW by luring them to an overbudgeted, mediocre copy of it, but looking at Elder Scrolls Online and a few others, I think some publishers need to take a few lumps yet.