[All excluded levels are just more workers.]

Level 15

Paving Truck

Are you tired of getting stuck on little trees that you should easily knock down? Forcibly switching fields to astrology when you accidentally hit a rock pile at full speed? Well, have I got the solution for you! Introducing: The paving truck! It's a large truck that you can unlock by reaching level 15. You can toggle the paving feature on and off at anytime you want. Oh, what's that? You don't want to sit there at a snail's pace for the entire time you're paving? Well, no worries! You can just hire a worker! There's also management upgrades. It works just like the fossil worker upgrades, but instead of being able to queue up more fossils, you can queue up more roads to pave!

Level 17

Better Digsites

Are you tired of needing to run back and forth with extra crates? No worry! We have a solution! Now that you're level 17, you can have two crate holders, plus a larger tent! Additionally, on digsites with two pallets, you now have four! And on digsites with three, you have six now! All at the small price of an extra digsite setup kit.

Level 20

Museum Semi Truck

Oh, what's that? Your off-road truck can't haul all of those supplies from the new digsites? No worries! As a reward for all your hard work, once you get to level 20, the museum will lend you their semi truck! Its flatbed trailer can haul two digsite setup kits, 12 large crates, [14 when there's no setup kits in the way] and... OH GOD HOW MANY SMALL CRATES ARE ON THAT THING- Sorry, but, as you heard by my panic, it can haul small crates too! Oh, right... Yeah, all that equipment is not built to handle off-roading. You need to have all roads in the entire area paved in order to actually use the museum semi.

By the way, if this gets turned into an update trailer, the dialog needs to be read like a tv telemarketer from the '60s.