In all honesty, if the next games up until the 6th (and last one) are successful, I think EA will force Bioware to go MMO with DA. By that time SWTOR will have run its course, and EA would love nothing more than another cashgrab like SWTOR has become since the cartel market was introduced.
As long as a DA MMO doesnt interfere with the 6game plan, I think it could be a good thing, and if done right, could be a lovely way to finish the franchise.
It's called Star Wars: The Old Republic. And it's spectacular in its mediocrity, both from a story-telling perspective and a gameplay perspective. If the next game is Dragon Age: The MMO, I'm dropping the series forever. DA:I was pretty decent from a "happily ever after" perspective, I can live without having to wait for enough nugs to respawn so I can collect 10 nug skins to see the next bit of story. I've tried playing SW:TOR 3 times and every single time it has bored me stupid.
You probably dont play many mmo's then, do you? Because if SWTOR has bored you story-wise and gameplay-wise, then there really aint any mmo out there for you. SWTOR has many flaws. Many many many, I'll give you that. But it's still considered the best leveling mmo because of the Classes Main quests.
Maybe you should try one of the classes with the best stories and you wont be so bored? I'd recommend Imperial Agent class. The story is really good.
As for gameplay, its not mediocre, its your classic mmorpg, WoW style. You are free to hate it ofc, but I wouldnt say its mediocre, it works, and in terms of end game pvp and pve, the gameplay mechanics are one of the most entertaining I ever played.
But if you really want to still call it mediocre, then do it for the right reasons - awful outdated engine; complete lack of content and support for pvp; slow addition of content for pve, halfbaked rushed small expansions; more focus and development in cartel market (fluff items bought for real money) than content for paying subscritions, etc etc.