So I tried my best keeping the idea of the deck intact and just added ways to strengthen the tribe instead of cutting them out
March of the Machine introduces Battles, the first new card type in over 15 years
Check out all the cards added to the deck below

Mono-Green Elves | Gladiator | Mindmage Creatures (28) 1 Allosaurus Shepherd 1 Beast Whisperer 1 Crashing Drawbridge 1 District Guide 1 Dwynen's Elite 1 Elder Gargaroth 1 Elvish Archdruid 1 Elvish Clancaller 1 Elvish Visionary 1 Evolution Sage 1 Imperious Perfect 1 Incubation Druid 1 Llanowar Elves 1 Llanowar Visionary 1 Marwyn, the Nurturer 1 Oakhame Adversary 1 Oakhame Ranger 1 Oracle of Mul Daya 1 Paradise Druid 1 Pelt Collector 1 Reclamation Sage 1 Selvala, Heart of the Wilds 1 Steel Leaf Champion 1 Thorn Lieutenant 1 Wildborn Preserver 1 Wildheart Invoker 1 Woodland Champion 1 Wren's Run Vanquisher Planeswalkers (5) 1 Garruk, Unleashed 1 Nissa, Who Shakes the World 1 Vivien Reid 1 Vivien, Champion of the Wilds 1 Vivien, Monsters' Advocate Instants (8) 1 Assure // Assemble 1 Bounty of Might 1 Once and Future 1 Pulse of Murasa 1 Return of the Wildspeaker 1 Shared Summons 1 Slice in Twain 1 Veil of Summer Sorceries (6) 1 Explore 1 Finale of Devastation 1 Find // Finality 1 Nylea's Intervention 1 Prey Upon 1 Primal Might Enchantments (5) 1 Growing Rites of Itlimoc 1 Guardian Project 1 Path of Discovery 1 Song of Freyalise 1 Wilderness Reclamation Artifacts (8) 1 Heraldic Banner 1 Herald's Horn 1 Icon of Ancestry 1 Rosethorn Halberd 1 Shadowspear 1 The Great Henge 1 The Ozolith 1 Vanquisher's Banner Lands (40) 38 Forest 1 Castle Garenbrig 1 Tranquil Thicket Basically, almost nobody plays Gladiator to play aggro

This isnt enough for 3 mana, especially ignoring creature sources, and being able to later spend 6 to get a 4/4 flying trampler in Emerald Dragon isnt great either, Bob
Liberty Prime, Recharged isnt a bad card, it just fits better in the 99 rather than the command zone