I have thought about this before and recently came up with an improved design. Thanks for reminding me to update it.
This is only intended to cover the distribution part of the problem...
https://bitcointalk.org/index.php?topic=675333.0A. Far advance warning of an altcoin's distribution/fundraising, with a clear objective and roadmap for the project, and a set timeframe for the distribution/fundraising
B. A working closed source beta, to be open-sourced after the original distribution period
C. PoW distribution (50% of the genesis stake)
Ca. Use several different mining algorithms, with each having an their own separate difficulty and the same chance to find the next block (implemented in several coins.. MyriadCoin was the first)
Cb. Use at least one algorithm per different types of mining hardware (one for Scrypt ASICs, one for SHA256 ASICs, one for CPUs, one for ATI GPUs, one for NVIDIA GPUs, etc..)
Cc. The point of this is to allow people with all types of minin hardware to participate so it is inclusive of everyone.
D. A regular IPO distribution (50% of the genesis stake)
Da. This is to allow people to participate in the initial distribution that do not want to hassle with mining equipment.
E. Launch said closed source beta into the wild after the distribution/fund-raising has occurred and switch to PoS
F. To mitigate claims of having an unfair PoS distribution to early insiders...
Fa. Have an annual auction governed by smart contracts
Fb. The amount of tokens sold in the annual auctions should be reduced each year until eventually there are no more auctions or coins released
Fc. This is intended to mimic the block reduction scheme and distribution of most PoW currencies