Having GPU miner as part of the release bundle at very launch has to be mandatory for coin to be considered as "fairly" launched. CPU2GPU ratio is irrelevant. Even if it is 1:1 it simply has to be released immediately.
I disagree. We are eagerly awaiting for a coin that would *never* have a GPU miner, only CPU. There are people working on this, and Cuckoo Cycle looks the most promising. First coin which achieves this may be a revolution, with millions of individual miners finally being able to get involved in cryptocurrency.
The botnets indeed eagerly await this. I'm pretty sure this is a philosophically wrong goal, but we can debate that another time.
Botnets are unimportant and not an issue. How many +10k botnets are there? There are even less +100k botnets, you can probably count them all manually. And only Android has +1Billion 30-day active users:
http://techcrunch.com/2014/06/25/google-now-has-1b-active-android-users/
All botnets combined are just drop in the sea if only a part of those mobile users got involved in mining while their devices charge overnight. That's the best chance to bring cryptocurrency to the masses and scale the number of users by few orders of magnitude.