If the Mavs are gonna stick with Kyrie for his offense and use an extra defensive SG to cover Kyrie on defense (said SG won't be that good at offense or they wouldn't be available), then Kyrie needs to bring his offense every game.
I'd consider two options.
Option 1: Replace Kyrie with someone who is a two-way player, like Dejounte. (Followed up by getting a two-way SG too.)
Option 2: Sign someone to spell Kyrie (and Luka) during games and when he's off, like Coby White. (While keeping the defensive wings: DJJ, Green, Exum.)
Either option is fine.
I'd consider two options.
Option 1: Replace Kyrie with someone who is a two-way player, like Dejounte. (Followed up by getting a two-way SG too.)
Option 2: Sign someone to spell Kyrie (and Luka) during games and when he's off, like Coby White. (While keeping the defensive wings: DJJ, Green, Exum.)
Either option is fine.