When comparing Hero Lives vs Fenrir specifically its really hard to say which would be better into droll. Id argue that hero lives actually gives you a line to make baron before adding any cards at all if you have it plus arrival. Also depending on the rest of your hand you can always get a different search in before going for Light-Heart if you see that droll would truly be a turn ender. When you see your opener you just have to pick which hand traps you want to respect, but its usually fairly tough (not impossible) to play around both droll and nib at the same time. Also Id argue that in the meta right now the difference between ending on just Light-Heart versus just Fenrir isnt really that much - most decks can lethal you through a single Fenrir and nothing else anyway. So imo you might as well play the package thats more synergistic. At the end of the day its preference but I think if you start to make too many concessions to droll in the maindeck then this may not be the meta for the deck at all. Sideboard is when you should start respecting droll most. Do it going first game 1 only when your hand truly can allow for it.

I like the reasoning, that's a good point of view to be honest@@TeamShaggypatriot