FormerlyHemlock
Hero
Nope. There are other ways to model cooperative tactics, and with advantage/disadvantage being binary in 5E, giving out advantage merely for flanking is too damaging to my ability (as a DM) to model tactical situations. It's too large an effect to make ubiquitous.
If I did want to model flanking, I'd feel compelled to incorporate an element of choice. Having a kobold at your back should not grant the dragon in front of you advantage--it should be possible to ignore the kobold and focus on the dragon. One way to do this would be to say that all foes except one get advantage against you; you choose the one.
But that's still too much impact for my taste. Instead, cooperative tactics in 5E involve things like one guy knocking the target prone one with one his attacks, then both him and his buddy beating on the target at advantage; and the buddy Disarms the enemy and tosses his weapon away.
If I did want to model flanking, I'd feel compelled to incorporate an element of choice. Having a kobold at your back should not grant the dragon in front of you advantage--it should be possible to ignore the kobold and focus on the dragon. One way to do this would be to say that all foes except one get advantage against you; you choose the one.
But that's still too much impact for my taste. Instead, cooperative tactics in 5E involve things like one guy knocking the target prone one with one his attacks, then both him and his buddy beating on the target at advantage; and the buddy Disarms the enemy and tosses his weapon away.