I wouldn't worry about the dumps cause that is just the nature of what happens when there is high block reward in the beginning. The actual spread of the currency has to happen now. If someone wants to make money on GLDcoin the only way is to put in the work to create a back bone for it's value. Which means creating venues where GLDcoins are accepted. This could be something as simple as a payment system in a game where you buy in game currency for GLDcoins. Simple little things like this add up quickly because it spreads the user base around.

If you want to know what GLDcoin has over others. It's that if you provide the environment for it to grow the coin will hold its self up. The name is also very clever because gold is a timeless symbol for money. Meaning it's very easy for people of all ages accept "gold"coins over lets say... "feather"coins ect. As a legitimate token of value.