It was the Bitcointalk forum that inspired us to create Bitcointalksearch.org - Bitcointalk is an excellent site that should be the default page for anybody dealing in cryptocurrency,
since it is a virtual gold-mine of data. However, our experience and user feedback led us create our site;
Bitcointalk's search is slow, and difficult to get the results you need, because you need to log in first to find anything useful - furthermore, there are rate limiters for their search functionality.
The aim of our project is to create a faster website that yields more results and faster without having to create an account and eliminate the need to log in -
your personal data, therefore, will never be in jeopardy since we are not asking for any of your data and you don't need to provide them to use our site with all of its capabilities.
We created this website with the sole purpose of users being able to search quickly and efficiently in the field of cryptocurrency
so they will have access to the latest and most accurate information and thereby assisting the crypto-community at large.
I think that the *real feature* provided by bitcoin is transaction verification. So all that needs to be done is extend the "transaction" data structure to include a "what" field. Thus anyone could create any kind of "Currency" and have transactions verified by the bitcoin swarm.
Following what Babylon said in here, here is another idea directly related to the money supply. Other people would want to create other systems like BitCoin. Well, how about BitCoin having a feature called "minting service contracts"?
A minting service contract would be an XML which describes how a minting service can integrate with the BitCoin network. Basically, rather than having lots of software applications (which would have to be trusted) which do the same thing as BitCoin but with slightly different protocols and numbers, use just one (BitCoin) and let users import minting service contract XMLs (into their BitCoin client).
Each XML describes how the minting service works, what the protocol parameters are and basically how the coin creation is initialized. This way, they can all live within the BitCoin network, but it remains to the users to decide which minting services to use.
This allows the entire network to increase the money supply (of course, with different types of currency), gets rid of voting and doesn't "force" users to use a specific currency.