[DLC] Mining productivity cost its too low

[Alwego]

At this moment this research cost only red, green, blue and purple science. But this is so powerful so imo yellow science should be required for this.
This allow to build more battery and electric engine and make hope for rare parts.

[Givikap120]

Considering all the new expansion features - I think mining productivity isn't that useful
You have already near-infinite basic resources on Vulcanus, so all the expensive things can be made there
And on Nauvis I never ran out of ore since I got the Foundries filled with productivity modules
Especially considering big mining drills existing

So this research is very high priority only if you for some reason haven't visited Vulcanus

[HadesSupreme]

Mining productivity does affect oil drills and I've found it useful there.

IMO all infinite research should include more science packs over time, eventually hitting promethean.