After finishing Stiens;Gate, I can finally see why it is beloved by so many people. It has very good charecters and an interesting of presenting the characters in the plot. However, someone on the fandom had once mentioned that Re:Zero was a "knockoff" of Stiens;Gate. And after watching the entire show, i can see why they came to the conclusion.
Plot: The plot of Stiens;Gate isn't particularly unique like say AOT or even Death Note. However the story revolves around it's characters and character interactions. The start of the series though is REALLY REALLY REALLY slow. It was painful to even finish the first 5 or 6 episode. But once the main plot took off, it was more enjoyable than any other character writing I've seen in a long while.
Characters: The characters are the core of the show, although they were inconsistent here and there they were really memorable overall. The characters were 7/10 (i dont think I'll ever give a 10)
Overall Score: 8/10 (again i dont think I'll ever give a 10). [More precisely, 8.5/10]
Parallelism to Re:Zero: The story may at first glance seem similar to Re:Zero, and maybe the feelings of despair and loneliness that Okabe had faced, be the direct inspiration to Subaru's disparity. But the core elements, themes and ideas were entirely different. Also i enjoyed this show a lot more than Re:Zero. Re:Zero was inspired by the respawn mechanics of a video game. Besides, Stiens;gate was a lot more fun to watch. I'll say this tho, You won't enjoy Re:Zero if you compare it to Stiens;Gate. Re:zero personally wasn't that good any way since the 1st season kept things a bit too secretive and the character interactions were not as good. I haven't watched Re:Zero S2 yet but yeah...