I disagree with you if the difficulty retarget is not properly adjusted and there is huge power, the fight for blocks can fork the chain and you discover a lot of blocks that stall and are not confirmed... so a lot of mining power wasted.....
But at the moment the bad thing about TGC is that we don't have an exchange......
Exactly. So don't throw an irrational high amount of power into the network or you'll be wasting some of your mining power. ;-)