Playing Multiple Levels should allow for multiple Digs.

While I agree (or at least think that there should be an advancement to enable multiple digs), an argument could be made that this would be unfair: You already get twice the APs, why should you also be able to double your artifact yield?

I concede not having multiple digs on one level. That is fine.

I'm thinking one active dig per level. Either that, or remove ML. Not a fan of it anyway.

It is what it is.

It appears you aren't that far into WZI and I guess you don't have many advancements, yet. So, it is quite likely that there are times when you don't dig at all because your previous dig site is finished and you either haven't found another one or don't have the money for it yet. In these cases, having a second level in parallel can help you, because you should (almost) always be able to dig something in either of the levels.

That said, ML (roughly) doubles your AP-income. So, absolutely no reason to not ML if you can and want to. Having only one digging crew is about the only drawback to ML. EDIT: If you use passive artifacts only. Otherwise, active artifacts is a drawback, too.

Edited 11/1/2021 10:05:24