I'm sure Astellia Online will be a better MMO than Fallout 76. (I can't confirm that, because I'm not dumb enough to buy Fallout 76 for the PC.)
I have yet to play an (actual) MMO that I like more than ESO on PS4 (before I sold that console). I also played STO & Neverwinter on PS4, but never got hooked onto their gameplay mechanics. I tried GW2 & Champions Online for PC but quickly got bored of them. IF ESO ever came to the Nintendo Switch it would either be a dream come true or my waking nightmare (Skyrim pun not intended) as I was addicted to ESO's microtransactions.
There is also Crossout I played on PS4, but I don't think of it as a real MMO. I miss the car I built that I nicknamed The Wallflower.
Come on drive a little! Nothing last forever! There's got to be something better than in the middle! But me & Cinderella put it all together! We can drive it home with One Headlight.
I got the lyrics wrong, but refuse to correct them as this sounds more about a vehicle than the correct lyrics.