you know that m+ route doesn’t get used on normal/heroic dungeon right? You dont need a 100% mob count.
You say this but in my experience (and I do run alot of heroic dungeon for runes) people generally dont care about people lagging behind in those dungeons. If you pull extra that’s fine run it to me and I’ll grab the aggro but I will never chase after you. If anything I got kick for “going too fast” and M+ running will never kick for that reason.