1 July 2019: I'm watching Re:Zero because of Isekai Quartet
This is some compositing.
I tried watching Re:Zero kara Hajimeru Isekai Seikatsu (Re:ZERO -Starting Life in Another World-) when it aired during the Spring 2016 anime season. I made it five episodes before dropping it because I found the show rather irritating. Fast forward to the Spring 2019 anime season, and somehow Isekai Quartet finished at the top of my rankings, edging out Kono Oto Tomare! I did, in fact, expect this to happen. (The watching part, not the ranking part, that is.) I've made it through the first cours of Re:Zero so far, and do have to admit it improves quite a bit after the initial episodes.
Partial eclipse.
I'm a little surprised how few spoilers I knew, and how many I had forgotten. That probably helped, by preserving the sense of mystery that pervades the second half of the first cours. I do 100-percent still remember the Rem and Emilia spoiler which is still to come, though. However, since I don't actually 'ship any of the characters, knowing this probably isn't going to matter much one way or another. In any case, my renewed curiosity in Re:Zero is probably a testament to the success of Isekai Quartet as a marketing ploy. Seeing as how Isekai Quartet is getting a second season, with the promise of unspecified newcomers, I suppose it's possible the premise will expand to include more than just four Kadokawa-affiliated isekai properties, although then maybe they'll need to call the sequel something like Isekai Octet or whatever. I think I'd be okay with that.