Legion Warboss is what Standard Goblin decks have been missing in order to turn into a competitive archetype. Now you can expect a few variants appear in this meta.
At this stage Goblin tribal decks in Standard can't get too aggressive due to the lack of viable early threats, but when you reach 3-4 mana you can start playing all the best Goblins the format can offer, including Legion Warboss, Goblin Chainwhirler, Goblin Warchief, Volley Veteran, and others.
Since you can't make an aggro deck out of Goblins alone, you can rely on the plan that includes Heroic Reinforcements and Radiant Destiny that will buff your Soldier creatures, such as Skymarcher Aspirant, Boros Challenger, Swiftblade Vindicator, and Legion Warboss.
The tokens deck can be based on the usual March of the Multitudes and Divine Visitation combo with Trostani Discordant that can make your tokens even stronger.