Double (or more) the material requirements for all tiers of microminers. Make the return half as much ore. Increase the projector power requirements and build costs.
Micro miners are already outclassed by DML in the base pack, this mode will make people focus on actually investing into micro mining as soon as possible.
Double (or more) the material requirements for all tiers of microminers. Make the return half as much ore. Increase the projector power requirements and build costs.