Champion interaction in lore

In the new Mundo story (which was amazing) I loved how he found Ekko and tried to cure him as his patient zero. For some champions, interaction with other known characters is mandatory due to them being intertwined in the lore somehow (Cait/Vi/Jinx, Viktor/Jayce, etc...) But these two are different from that. They don't have any huge ties to each other, they aren't key to the characterization and plot development of each other, they are simply two characters that live in the same area that had an interaction with each other. I personally would love to see a lot more of this. Stories like Jax's, and Mundo's that have these little gems are really cool, and would love to read more like them. I'd love it if this concept was expanded upon further and more stories were written that were focused on champion interaction for both people that have major ties with each other and also for champs that are only meeting in passing and don't even know who the other person is at the time.