That is actually the idealistic nature of a cryptocurrency...just to exist....decentralized
Actually the idealistic nature of cryptocurrencies is to be used and not to exist solely. Creating a currency is more than just creating some colorful papers - it´s about creating an infrastructure & a community that uses it. You can´t just magically divide a token from its use. However, of course I agree that the adoption is not a technical issue. Transparent development - or in this case: development AT ALL - can spark buzz and serve as incentive to create a community.
And of course there is need for development. Currencies have features, because they are directly tied to the medium in which they are transferred. Cash for instance can be passed from one person to another without these persons (or a third party) necessarily knowing the identity of the other person. With electronic money this isn´t possible. With cash you need to wait for the change, with EC you can simply use a password check or signature and with several newer cards you can simply swipe. Most of that does not concern Quarks core development, but this is THE ONLY THING that makes a currency special.
If it was only about the core, then there is no scarcity at all. I can fork and create the next senseless fork of Quark and there you have it. Scarcity is created by making this currency special, otherwise there can´t be any value.
And also from a technical side: development is needed to take care of the hashrate issue. Repeating the existence of a "funky solo mining competition" has no serious effects unless you´d bump up the reward MASSIVELY (like x100) and it isn´t sustainable because currently it does not finance itself. Right know bitinfochart counts 337,1M, of which Coinmine owns 321,3M - that´s the effect of paying some cents to people who bother to take part in a forum hosted contest. Beside that: Even with Bitcoin people and pools don´t mind passing 50% and - by doing so - effectively corrupting the assumed decentralization and trustworthiness of the currency. The logic of POW will always provide more incentives to mine on a pool unless you pay them not to do it. Solo mining is for idealist who are in love with their currency and want to support it. That´s cool - but that´s not what the grand majority of any currency using community will feel like any time. For a long time Bitcoin was like that, but the more it became mainstream and a business, the less people cared for stability. The prefer to receive higher rewards and I don´t know any business that prefers otherwise.
Hopefully, I must say, because money is not there to love, but to be used. It needs to be able to work by itself, not by the extensive effort of evangelists. That´s why PoW/PoS hybrids will eventually be more sustainable. Quark could have made this move, but there was/is no development activity and, of course, people who shouted that this would only be fancy features for investors who want high revenues.