I think what would be really dope for this whole chrisnapped arc is if while Eddie and Buck are having their stuck in close proximity in the car tension/moment we got a sequel to the "Do you know how much Christopher misses you? How could you, you're not around!" grocery store divorce line. something along the lines of "And you show up NOW once Chris is missing? We've been back from Texas (Enter correct timeline amount here) months and you've barely been to the house!" as a way to call out the distance between the characters without explicit Buddie reasons (which there definitely are but this is a Chris centered arc and I don't think either of them would lose focus).
I don't know I just think that they've built up the Diaz's as Buck's family and then not showed it this season and an address of it is long over due. I don't care if we get into Bobby, Texasarc, Abuela, confessions, buddie, or even another divorce arc as long as we finally get into how much they love Chris and whatever reason the writers have given for Buddie's general weirdness this season.