Mining field unification (not: 3 little Niobium fields in T23 => 1 ore, 1 field)
Deletion of inactive fields (not: 2 out of 3 fields are inactive => avoids confusion)
Clustering of mining areas (not: 1 mining area upper right, other one 70 k away lower left => more interaction)
Concentration of mining activity (ore fields not spread out over x systems => activity hot spots)
Standardisation of values (not: Dublin mining used to be bad, while O3 was always fast => fairness)
For example, Dublin has already been through the fixing process.
