The original idea was for a long-term investment - a safe harbor if you will. At the time the coin was started there was a serious problem with wild valuation problems due to mutli-coin mining sites. They would check valuations every 15 minutes or so mine, then dump, whichever coin was most profitable. 1Credit was design to resist that by having a large variation in its difficulty and resulting block times - making it hard to predict for those sites. That part remains working as planned:
Everyone has seen "long blocks" on bitcoin, which likely has hundreds of thousands of miners, if not millions, working against it. Although bitcoin is suppose to have a 10 minute block time, its not unheard of it having "long blocks" that take hours to find.
1Credit, with its much small pool of miners, has a slightly shorter block time (about 8.5 minutes), but by design encourages a both short and long block times. When you look at it over a period of a month or three, it averages out to its design time, but over a period of hours or days swings all over the place, sometimes with a "long block" taking more than a day to find. This makes is horrible as a bitcoin replacement - since confirmations can take a long time, but is not a problem as an "archival" coin, where you may only do a few transactions a month. Its a niche, but seems to have found some backing.
Currencies have a lot of potential functions.
If I were to look at the attributes of 1Credit
*Very fair non commercial features
*No premine
*No block halving
*Not designed for 'transactions', rather for continuity/stability
etc
I would suggest using it as a sort of meta currency to connect the values of other currencies.
Bitcoin, litecoin etc have a lot of uses. you can buy things directly on some sites. You can convert them to fiat and buy things indirectly, etc.
One major use of bitcoin is to connect other currencies. For example if you want to convert Piggycoin to Soilcoin you first look at each in terms of bitcoin. Bitcoin is not great for that, since it is so volatile relative to the practical currencies people use for actual life (i.e., fiat), but at this point fiat is not useful for purchasing altcoins directly, nor for measuring their value reliably.
1Credit seems like it would be a good choice as a sort of 'token' to encourage liquidity across currencies. It is very cheap right now, market cap ~usd $9,000
https://coinmarketcap.com/currencies/1credit/ and wide open for any kind of project a person wanted to start with an unusually high quality coin.
The vast majority of coin projects never make it, and maybe building exchanges around something with features other than those of btc/ltc and/or fiat would not work. But it's one idea somebody might use 1credit for.