For goblins that is easy to do, by simply adding a color like black or green
Decks that fill the graveyard quicklyself-mill, discard outlets, or sacrifice enginesopen up embalms full potential
Cards should be unsleeved, sorted, and packed carefully before sending
Brawl is singleton and easier to manage with your existing collection, Historic has similar mana bases to Pioneer, and Timeless has the additional expense of fetch lands, not to mention all the powerful nonland cards in both formats
Also, since [c]Faithless Looting[/c] has flashback, you can discard it with other cards on this list and cast it from your graveyard instead