Helldritch
Hero
I'm glad ppl pointed out the commander's stike 
The Battle Master is not sacrificing that much dmg. Barely 1d8+5 as he took defender style with shield blocking.
The paladin is the same so I often end up attacking the rogue at disadvantage and believe me, I know what I am doing in combat but so do my players. Do not forget that the BM is only sacrificing one of his two attacks not both (and soon to be 3 if all goes well). So in effect, our BM is doing more dmg by allowing the rogue to attack more.
Even if he were GWM. It would mean losing only 2d6+15 or an average of 22 (Max 27) where our little rogue does 27 (max 41) (not counting the manoeuver dice). It is more profitable this way. And yes our BM has taken the extra maneuver dice from the feat (next ASI will probably be either con increase or the shield master feat).
The more I read from your posts and comments, the more I get convinced to remove concentration from Hunter's mark and Hex (for the latter I'm not sure where it would lead as Warlock are not on the weak side dpr wise but consistency should be maintained).
@auburn2
Sneak attack dmg can be done consistently as long as the ennemy target is within 5' of an ally. RAW and RAI. The only draw back is that without an ally, you need to have been hidden (and that way you'll get both sneak and advantage). And yes, you can argue that it is the BM/Rogue combination that is the problem but it is still very different from haste. Haste won't give you an other sneak. Commander's strike will. (I now shudder at the thought of two BM with a rogue... brrrrrrrr.... ).
And please do not assume that I don't know how to handle combat. I do know how to, I have quite a long experience behind me in all editions and even other rpg (35 years of DMing should count). I'm not afraid to PK or even TPK if the events leading to that are justified by players actions or inactions. But beside that, your comments are quite welcome and appreciated. Thx a lot.

The Battle Master is not sacrificing that much dmg. Barely 1d8+5 as he took defender style with shield blocking.
The paladin is the same so I often end up attacking the rogue at disadvantage and believe me, I know what I am doing in combat but so do my players. Do not forget that the BM is only sacrificing one of his two attacks not both (and soon to be 3 if all goes well). So in effect, our BM is doing more dmg by allowing the rogue to attack more.
Even if he were GWM. It would mean losing only 2d6+15 or an average of 22 (Max 27) where our little rogue does 27 (max 41) (not counting the manoeuver dice). It is more profitable this way. And yes our BM has taken the extra maneuver dice from the feat (next ASI will probably be either con increase or the shield master feat).
The more I read from your posts and comments, the more I get convinced to remove concentration from Hunter's mark and Hex (for the latter I'm not sure where it would lead as Warlock are not on the weak side dpr wise but consistency should be maintained).
@auburn2
Sneak attack dmg can be done consistently as long as the ennemy target is within 5' of an ally. RAW and RAI. The only draw back is that without an ally, you need to have been hidden (and that way you'll get both sneak and advantage). And yes, you can argue that it is the BM/Rogue combination that is the problem but it is still very different from haste. Haste won't give you an other sneak. Commander's strike will. (I now shudder at the thought of two BM with a rogue... brrrrrrrr.... ).
And please do not assume that I don't know how to handle combat. I do know how to, I have quite a long experience behind me in all editions and even other rpg (35 years of DMing should count). I'm not afraid to PK or even TPK if the events leading to that are justified by players actions or inactions. But beside that, your comments are quite welcome and appreciated. Thx a lot.