I played all of those. I’d just started to get back into TERA when they shut it down. 
SWTOR was great and I got through the whole campaign on multiple characters but it’s basically abandonware.
I haven’t experienced it myself, but I’ve heard that the leveling experience in Dragonflight is fantastic, probably the best they’ve had in WoW for many years. If you can afford it, it should be worth doing. Blizzard had kept adding more and more to the endgame with each expansion and neglecting the early game, until this recent expansion addressed that. I think if you’re not familiar with WoW and you’re just starting out, you will really want that expansion. So I think you’ll be pleased.
Oh, and here is the thread on this board discussing the expansion (disclaimer; I haven’t read this thread yet):