So I think from the Domundi announcement, in the condition that the shows will end up airing I think I will put these shows on to watch list:
My Merman: probably going to watch this for the second pair Kim and Latte. Oddly this trailer got me nostalgic about manga/anime Mermaid Melody that I loved as a teen, probably bc the show combines merman's and idol culture.
Passenger seat number X: honestly just watching this for Zee and NuNew. Just based on the trailer I expect this to be rather simplistic lovers getting back together plot, nothing complex.
Into Racha the series: Based on trailer, this show so far looked to have the best chemistry and tension for the main couple and the plot. Seems to be one of the "edgerie" shows coming so that is a plus for me.
Mr Fanboy series: This looks very chaotic, but I like the main couple. I will probably watch a couple of first eps to see is it something I want to watch until the end.
Your third: Nat and Max are bit like Zee and NuNew for me, they were in some of the first BLs I ever watched, so I think I will give the show a try, bc I want to support them. Probably could be something good to watch when I want something lighter, since Your thrid seems to be a romcom.