Tbh I am quite lucky in that one of my dream k-pop collabs has already happened... TXT and enha have collabed on stages and recorded music and even variety content and every time it's been fantastic, I think many fans were biased for or against these collabs even happening (imo let's just have fun) and the end product was incredible each time. I think they have great chemistry together and for groups who are both very tight-knit and more comfortable with each other than other people it was also nice that they seemed to be comfortable with each other. I would be really happy to see them work together again now that both groups have grown artistically and in terms of performance, and I think this could lead to some pretty cool combinations... beomgyu x jay guitar duo or heeseung x kai on the piano, etc, some sort of band group w these members producing would be a Dream.

Otherwise it would have to be tempest and zb1, I've said this from the beginning but I think they have a lot of musical similarities and ofc the members are very friendly with each other! I haven't enjoyed zb1's latest releases as much so I haven't kept as up to date with them in general but youth in the shade to me resembles a less polished version of some of tempest's music, and melting point could 100% fit into tempest's discography. I once made a list comparing their songs and honestly!! I think they could pull off each other's music very well. And as with the tempest x kep1er collaboration stage I think tpst do quite well with collab stages so it would be fun to see them perform with idols that they're already very friendly with and have History with