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How would people feel if Game Freak ever just combined Rock/Ground into a single Type, just call it "Earth", since they're imo pretty similar. Never really understood the difference, flavor-wise, and it's always been two types I feel could've been combined to ease things up...hell, in Gen 1, besides the Fossils, all the Rock Pokemon were part-Ground. Guess it'd be weird after this long though...
If they did combine them, what Weakness/Resistances would you want the Earth-type to have? I'd keep the Electricity resistance, but I'd remove the Fighting and Ice weakness.