I think Unlicensed Disintegration is pretty good, but it's true that 2 artifacts makes it very unlikely to work as anything more than "Destroy Target Creature" for 3 mana (which is fine). However, you can throw in some Equipment or Vehicles that help increase your aggression.

Fleetwheel Cruiser and Ovalchase Dragster have Haste, and Haunted Cloak and Strider Harness grant Haste while attaching for (1). Almost all your minotaurs are 2-3 mana, so once your lands outpace that, being able to attach a Haste to each - conversely, a Vehicle allows you to crew with a creature with summoning sickness.

...also, minotaurs driving racecars is a stand-alone concept whose value cannot be overstated

My main concern with Cartouche of Zeal plus Trial of Ambition is that since you are burning your hand out so quickly, you're making it very likely that you will be able to trigger that combo rarely (if ever), so just having an equipment or vehicle you can toss out to help trigger Unlicensed Disintegration damage and accelerate your damage may get people deader faster. Also, you can use the Crew mechanic if need be to tap out your whole board to do more damage with Throne of the God-Pharaoh if need be to secure the victory.