Actually I think this is one of the best new gameplay ideas I have seen so far.
But there are couple of more things we have to think about:
- Do you want a distribution of between 1-4 buntenol (nice name btw) per plot, or between 0-4?
0-4 would be more like in real life. Just like crystite cannot be mined on every plot. And what about the Assay bot? Would it give you the amount of buntenol in the plot, or only the depth? Is the well located on one layer in the ground, or the deeper you go the more buntenol you can produce?*
- Several MULE needed to dig deeper: what would happen if you remove MULE's from the plot? Do you remove them 1 by 1? Or do you only remove 1 MULE before the plot is empty again (other MULE's are deep in the ground and cannot be recovered anymore)? Removing 1 by 1 doesn't look like a nice idea to me, because then you can use a plot to store MULE's. You strategy can then be: install a couple of your plots with all the remaining MULE's so there are none available for the rest, and every next turn I can get one of my cheap MULE's from those plots to further develop.
- Nice idea of the filling station. But what would the price be? Are you selling your produced Buntenol to the shop and the shop gives you the availability to fill up your MULE's if you pay the shop (like outfitting your MULE)? Or do players need their own amount of Buntenol which they use for their MULE's themselves?
*Graphical example of buntenol in plot.
surface
0 1
4 or 3
0 4
You are right, the amount should be from 0-4. But that being the case, a player would be foolish to drill for buntenol without assaying the land. It could be expensive to keep drilling down if there's nothing there. The assay bot will never tell you the depth the buntenol is at. It is your choice to keep digging for that gusher or to give up and use the plot for something else.
You don't get any buntenol out of your plot until you reach the depth it is at, so it would be like this
0
4
x
The x is because once you reach the depth of the buntenol deposit in that plot, you can't add more MULES to drill.
As far as your question about what happens when you pull a MULE off that plot. When you put a second MULE on a drilling plot, the first MULE is completely converted to driilling shaft and is no longer a MULE. So no matter how many MULEs you added to the first, there is still only one MULE on the surface. If you changed the plot to energy and then later back to drilling, those other MULEs would still be there and it could be used as a buntenol plot with just one MULE.
Buntenol must be refined into MULEfuel at the colony base to be used in MULEs. It takes 2 units of Buntenol to make 1 unit of MULEfuel. So when you buy buntenol in the market auction, you are buying futures or speculating. You are not buying what you can put in your MULE any more than buying smithore lets you have MULEs instead of buying them at the store. When you fill up a MULE in the base, the cost of a unit of MULEfuel is calculated on the current price of buntenol, just like the price of MULEs are based on the current price of smithore. If it is selling at $130 per unit, that's what you pay to fill up. If the price falls to $40 per unit, you might use the turn to fill a bunch of your MULEs while the price is cheap.
Thanks for your support of my idea. Like I said, I've actually had it bumping around in my head for 25 years.