The problem is that burn as a concept (something that is often a Boros thing but that changes too) is not a tenable solution in a game with the inflated life totals of Commander and often people even look to the cards that come from that archetype that are generally considered workhorses like a Lightning Bolt as not worth a slot in a Commander deck.
It is also a hard problem to solve because there is nothing to stop decks with more colors to use those cards were they ever printed. It is very hard to play a Boros deck I find when Mardu and Naya and Jeskai are right around the corner unless you really like a Legendary option.
Maybe Ajani Vengeant is the answer but that is a whole other thread and conversation.
At least I hope it is not.
It is also a hard problem to solve because there is nothing to stop decks with more colors to use those cards were they ever printed. It is very hard to play a Boros deck I find when Mardu and Naya and Jeskai are right around the corner unless you really like a Legendary option.
Maybe Ajani Vengeant is the answer but that is a whole other thread and conversation.