Bitcoin and Litecoin has a flawed design on difficulty adjustment to control inflation or coin generation: every X blocks where X is very big number
Diamond adjusts the diff every block, which makes
+ multipools is unprofitable
+ long term mining is much more profitable
+ a sudden drop in network hashrate does not slow down transaction in general. Incremental and responsive diff adjustment helps strengthen the network
Newly announced altcoin EarthCoin embraces this design too. Nice try and good luck