The main card draw options it gives us are all zero power, which is neat, and we have reasons to try Archetype of Courage and Destiny Spinner
The one downside, albeit small, is that Dragons Rage Channeler is much more aggro-orientated than other threats that are usually played in tempo decks
Poster Stellar Sights are only available in Collector boosters
Getting 2/2s simply for playing Magic is a strong ability on its own, and opens up options for mana ramp, Voltron (making 1 creature super strong through powerups), Curses like Curse of Opulence for table politicking, and several other cool, unique effects that Auras can bring to the table as you build a token army
Many successful Boros Energy lists now feature Fable of the Mirror-Breaker as a better all-round three-drop in the main deck, while Deafening Silence has become a prime answer to Ruby Storm after sideboard
And you can bring in all the old Amass cards from War of the Spark, too