I think the main problem I have at the moment it too many games to choose from, and too little time to play them. I have Trails in the Sky SC (pc), Final Fantasy X (Switch, although I have previously played it on PS2 and pc), Cosmic Star Heroine (Switch) and Persona 4 Golden (Vita) at various stages of completion. I'm also itching to play Radiant Historia Perfect Chronology on 3DS.
It also doesn't help that I've recently been investigating emulation, as it was annoying me that so many JRPGs I want to play are not available in the UK.
I hear you on the lack of availability. I've been looking on Amazon and other websites at JRPGs and surprised at how many aren't sold in shops where I live. To satisfy the craving, I'll probably have to start importing them. At that point, I'd probably have to learn to read japanese kanji.
I too played Final Fantasy X on ps2 back when ps2 was a thing, and to this day, it is still my favourite Final Fantasy. The characters and story just resonated with me so well. But to some extent, I'm the minority in that situation -- I think most people found Tidus annoying and that put them off. I do remember putting about 200 hours into that game doing all the post-game content....
But being the odd one out has always been the case for me; Tales of Zesteria is also my favourite Tales Of game, especially when it's complemented with Tales of Beseria. Yet for some reason, the majority of Tales Of fans rate Zesteria pretty low compared to other games in the series, like Vesperia -- its rated higher by fans.
While Vesperia wasn't bad, I found the story was no where near as satisfying as Zesteria. It felt incomplete to me.
I'd say the game I'm looking to purchase next is
Persona 5 Royal. While I played the original, and I'm annoyed that they left out all this content, forcing us all to buy a second copy, I loved the game so much that Atlus knows I, along with many others, will give them more money for the chance to play more Persona. The game had so much style. I will say though, that it falls clearly into the category of time sinks you're talking about
You pretty much have to play the game through twice to experience all the content...