1. A coin with a 5sec block time for real-world transactions.
2. A coin with a rate of inflation that is on par with economic growth.
3. A coin that support multi-hash signing so that we can embed a distributed exchange in the program.
+1
Spot on. I would add just one thing: needs to be distributed, hence block must be generated with consumer grade equipment. If you allow specialized hardware then distributed network goes out the window.
I don't think this is as big a problem as people make it out to be.
If someone can't come up with $1000 for a decent rig that is their own problem. Out in the real world you generally don't get money for free. So having to invest in order to acquire coins isn't that big a deal.
Even without investing you can usually mine something even if it is a small amount or maybe you could earn coins by selling something at a market or doing some work for them. There are also giveaway's and faucets.
People point at bitcoin as an example of a currency out of reach of the little guy but at one time it was profitable to CPU mine even so it is widely disbursed.
The problem with disbursing the coin is generally in coins that are created 100% like NXT or with very short mining cycles like Quarkcoin. 6 months or even a year for 98% coin creation is going to tend to concentrate the coins in the hands of a few. Longer mining cycles are needed. Something else that BTC did right.