Here is my general idea of the blue line.
I believe there is enough passive interactions between pet and LM. I would like to see more active interactions like flanking. Damage wise I expect the same single target dps* as red line but the damage is done from cooperation between pet and LM. Main sources should be flank bonus damage from staff strike (but it should deal like 5-7 times more damage in blue line + increased flanking rate in blue line) and 1st line bonus in blue line (bonus damage from pets if burning embers are on the target – doesn’t work today. It would be also interesting if this bonus damage wouldn’t be common. It could be light e.g.).
While the pets should do reasonable dps by themself, they shouldn‘t be able to survive the enemy on their own. (Because this allows so called farming LMs). Their survival should be bound to healing and debuffing potential of LM. With the exception of the bear.
These simple ideas will make blue line more proactive than passive. Instead of „LM is doing his own thing“ and „pet is doing its own thing“ and some passive procs come out, they will be forced in cooperation which brings different playing style in comparison to the red line (pure damage, no concentration on the pets) or the yellow line (pure support, change pets every few second to keep up all dmg increasing debuffs). It would be more buffing oriented style with flexibility depending on the summoned pet.
*with lynx same single target dps, with other pets lower. Some aoe possibilities but much weaker aoe damage than in red line.
Ich bin kein Deutscher, sorry für Grammatik.
English isn't my native language, sorry for mistakes.