The ability it offers me as an engineer/geologist at my job (and I'm not alone). It makes creating accurate geologic cross sections easy! This software has allowed us all across our organization access this feature which would have been very difficult without Geomine by far!! Nothing so specific but some things could use improvement such like when you create multiple copies there isn't always enough room between them making viewing slightly more challenging especially if someone else wants their own copy too. But once again nothing really major just minor stuff here &there :) We've created over 100+ maps using GIS since we started working together about 5 years ago now including many different aspects within each map itself ranging form drainage systems to fault zones etc...