I hate to break it to you Vlad, but in a world of ASIC miners (Future-proofing you claim) at a time when you can purchase a 50 G Hash/s ASIC miner for $300, the difficulty will be so high on every decent SHA256 based coin, that you will still be looking at making pennies a day. Meanwhile the guys sitting on their 500 T hash farms will continue to pile in the profits from mining. The algorithm you choose isn't going to change this.
The reason scrypt is better for a start me up alt coin is the fact that it is far more secure, especially when most big miners will be in the big coins, and not in your little alt coin. You will be bound to attract smaller GPU based miners first until you can prove the coin to be worth something. During that time, anyone that wants to watch your coin crumble will be able to do it with relative ease with a handful of ASIC's at their disposal. Or possibly even 1.
For you, sure you think "who cares, I didn't but any money into it" but in order to even get the coin off the ground, people (miners) need to put their money (electricity and time) into mining you coin. Then people have to put money into your coin to give it worth. If you as a developer only see the coin as your personal playground, and who cares if I cause everyone to loose their money ect from it, you shouldn't be developing a coin to begin with.
I would be losing time and money as well.
Don't you think merge mining will mitigate the difficulty issue cause I agree, the difficulty will skyrocket.
And I don't want a coin to be a forever niche player in the scrypt underworld - I'd rather take my chances. And people aren't gonna lose their money on my coin - nobody buy a rig just for ixCoin, they buy them for mining and they mine the most profitable things out there.
So if this doesn't work out I'm really the only one losing out, both, Time and money.
But it seems everyone wants scrypt so that's it. I guess there could always be a re-launch, like a separate coin if it ever comes to that. I mean, I can easily see a SHA256 version of Litecoin. People will follow the namebrand regardless of which encryption it uses.