I dont see a point to it. Just about every instant upgrade i do would cost much more than its worth. Sure i'd like the upgrades and building times to be faster but i don't wanna throw 4mil+ out the window everytime i do it. Also, like someone said, it'd help out the gold buyers a lot more than itd help out the rest of us. The smart gold buyers (if there are any... Most buy gold because they dont know how to play and are getting beat) would put all skill points into energy and then buy gold to refill energy and do missions. A while ago i calculated that someone could make like 45mil with $100 worth of gold instead of spending $100 for 15mil cash.
I dont know what theyd make now with a better farm missions, but this would allow them to use their gold not only for building upgrades or units, but the same gold would be paying for leveling up through missions, cash and building upgrades.
