G'day,
I was iffy about this when I first heard about it but have changed my mind. There are at least three reason why it a good idea:
1) AOS is getting far too crowded. With Daisy getting her own Secret Warriors I doubt there's going to be much time for Bobbi & Lance.
2) Its a couples team up. Good! been saying for some time that was needed in the MCU (along with more youngsters but that's another matter) They can be fun to watch and successful. Think Castle, Bones, Elementary.
3) Chance to introduce more comic book character. Note. This would be the perfect opportunity to introduce Kate Bishop! Lance Hunter is really a Clint Barton substitute , at least in his relationships, and Mockingbird was Kate's trainer in the comics so she would make a fine addition.
Ralph