I suppose PCcoin does imply a cpu-only coin since your stated design is proof-of-work. Masscoin sounds more powerful yet doesn't convey that it is digital money.

Proof-of-stake requires no significant computation thus runs on any PC, but it can't be a coin of the masses because it can't distribute new coin in any competitive manner accessible to those only with a PC. Wealth is power law distributed¹ thus transactions will never do the job that socialism does to redistribute wealth to the masses and prevent the wealthiest 1% from owning everything. For money to not end up fiat where it can be debased top-down by socialism, the decentralized crypto-currency must be able to do the redistribution job that socialism is doing.

¹Dragulescu & Yakovenko. Exponential and power-law probability distributions of wealth and income in the United Kingdom and the United States