It's not that the game is dying (certainly not that), it's lots of other factors (Mostly lag).
LAG. As of lately my once smooth gameplay has turned into a rubberbanding mess, I can't dashjump when I need to, shield before I get struck, often I don't even see an enemy attack till I'm dead on the ground. Just a year ago I could waltz around the last room of FSC chipping away at the monster horde with a Valiance, now I can't even walk through the first floor without running headlong into lava.
Pay to get updates and apathy towards gear balance. It's been tough with so little new updates and care towards making the game balanced. It just feels like OOO doesn't care about making the game more enjoyable and fair to play. I had high hopes for this BK and Apocrea event that we could get some new gear to work towards but no, nothing.....
Fall of Knights (AKA the cancelled mobile game). I was somewhat relieved when I found out about this since it meant that OOO wasn't just twiddling their thumbs, but since it got shut down I fell back into pessimism.
What I am doing now: Well I've decided to fall back on my tried and true online gaming experience; TF2. It's still fun, thanks to Gun Mettle update balance is certainly an issue Valve is concerned with and best of all not Grindy or Pay to win. I'll probably still be on the forums and I may be back sometime in the future, just not as often as I used to be.......
PS no you can't have my stuff
It never hurts to take a break and come back when exciting stuffs are around I say. Good call!
OOO's online games are all alive and well (except for RoK) so I don't think there's anything to worry about; but perhaps the games are more meant for newcomers than their older playerbase, just lately.