What about pre-shance where the two found other versions of Lance from other realities and they figure out that out of every Lance in the same room, only (canon)Lance is not in a relationship with Shiro?
Lance (A) is carrying a little girl in his arms who is later introduced to them to be his three-year-old daughter with his husband, Shiro (A), who is working as a police officer in their reality(Shance (A) can be a little older??)
Lance (B) is in his garrison uniform, which means he is already going out with Shiro (B) back at the Galaxy Garrison, but in secret, as Shiro (B) was just recently promoted to be a senior officer there.
Lance © is not only an Altean, but also Allura’s younger brother which makes him a royal prince, while Shiro © is a Galran/Human prince who’s betrothed to Allura © but is in love with the younger brother instead (discussed some bits of this AU with @bijellyfishy and I had a really great time~<B)
Lance (D) is…, I’m not sure how to explain this but his Shiro died???(Okay, originally this was supposed to be Shiro (D) with his Lance being dead while he explains that the team (D) especially he and the blue lion have been mourning over him. Idk how to sort this one out but I just love the angst it brings)
I’m not sure what other Lance(s) I’d wanna add to this but yeah, that’s the idea :) and also, I kinda thought of having the Shiro(s) from the Lance(s)’ separate realities to join them.