It isn't really a matter of cranking out endless lines of code, as with most coins.

The holy grail of the digital economy is a taskwork coin that cannot be overrun by bots, and has a few other qualities.

Motocoin got overwhelmed by bots, huntercoin got overwhelmed by bots. Neucoin was going to approach the question from a more centralized direction and even it got overwhelmed by bots.

Another downside is that emission of a taskwork coin increases as the economy grows. Most coins, including bitcoin and digitalcoin, were designed to create whales quickly so there would be a crew with a big stake motivated to pump the coin. More than half of all bitcoin that will ever exist were distributed to a pretty small number of people by 2012 so they would be motivated to pump it. A classic pumpndump scheme. Same with almost every coin. If dgc, for example, converts to a taskwork algorithm then emission has to start increasing again and everybody who is a whale now will be a minnow again before long.

Taskwork coins would solve a lot of problems globally but there are very few people working on developing them.