This is one case where I do recommend grabbing these commons over off-color rares in most cases
Right out of the box, Mono-Red Aggro is just a handful of spells (Risk Factor, Skewer the Critics, and Light up the Stage) from being the optimal, competitive version of Mono-Red
(Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Liliana, Dreadhorde General Rarity: Mythic Rare TYPE: Legendary Planeswalker SUBTYPE: Liliana CMC: 6 Mana cost: USD: $81.84 EUR: 56.85 TIX: 0.02 EDHREC RANK: 775 (6) Whenever a creature you control dies, draw a card
For instance, you could play Volo, Itinerant Scholar as your commander, but with a Criminal Past
If we went down to five archetypes, then only one archetype wouldn't be drafted, and we would have an easier time making sure the five archetypes had enough cross-synergy for each card in the draft to be playable