hmm... I'm not in favor of greatly reducing the amount of GGs we're getting. I'm thinking its good for the game - makes it more fun to have more xp to work with out the gate and with more for them to do and become it makes the decision there not as critical to stress over... one can be spared from their primary task of being planted in the city and adding xp to units to come. But we may have a few too many being given out in the early stages at the moment.
However, I'm thinking that if we simply make the GH come through on a whole NEW achievement bar and not have it conflict with the GG bar at all except that xp earned from fights with animals go towards the GH bar and all else goes towards the GG bar, then I think we'd find a little better balance with how many GGs are being earned (particularly if the earning of one or the other still expands the necessary cost in earned xp to achieve either one.