There are people/groups that can get GHs worth of mining power from GPUs alone.. How will a different algo defend against GPUs? I'm afraid we will see a similar hashrate distribution as we are seeing now. (though it would cost the attackers more resources)
True, I've seen a guy who has a 4.6GH GPU farm in the industry environment; he said he used to run only part of minging force...
Scrypt-N may not be the way to go as there are ASIC miners availabe soon. Can we come up our own aglo, more or less that will delay the GPU or ASIC miners, but if we can mine with cpu only, we may lose miners too, ... just a thinking, anyway, never mind.