Thank you for commenting, but I find that my sideboard is sufficient for turns 1-3 counter protection, and the deck falls apart in the mid to late game as the enemy deck stabilizes. Also you HAVE to run 4x berserk in this deck. Only having 9 realistic pumps and 2 Become Immense kind of ruins the whole tempo. Thank you for your input anyway, I appreciate all feedback.
Below is the Roughdraft of a deck I threw together which proves that the only reason kuldotha rebirth deck would be used over a mono-red goblin aggro deck is to avoid being milled by sphinx's tutelage or grindstone. Quicker, more efficient, no need for artifact wastes of space. Great Tribal synergy, the underrated manamorphose and of course the legendary food chain.
Mainboard
4x Lightning Bolt
1x Legion Loyalist
1x Siege-Gang Commander
1x Kiki-Jiki, Mirror Breaker
1x Krenko, Mob Boss
4x Goblin Ringleader
2x Goblin Lackey
2x Goblin Guide
4x Simian Spirit Guide
2x Goblin Matron
2x Goblin Chieftain
4x Food Chain
4x Goblin Grenade
2x Warren Instigator
3x Mogg War Marshal
2x Foundry Street Denizen
2x Teetering Peaks
4x Manamorphose
2x Stomping Ground
9x Mountain
2x Goblin Wardriver
2x Goblin Piledriver
Sideboard
2 Teetering Peaks
3 Skirk Prospector
1 Siege-Gang Commander
1 Purphoros, God of the Forge
1 Mogg War Marshal
1 Legion Loyalist
1 Goblin Lackey
1 Goblin King
1 Goblin Guide
1 Foundry Street Denizen
1 Brightstone Ritual
1 Warren Instigator