By the way I saw a Blocklancer project and it's already working, at least I can see some orders and freelancers on their site
BlockLancer project is based on Ethereum so they depends on the ETH price. For example if you start working and the ETH go down in price you'll have lower reward.
Our project is based on one inner token that have a stable rate ($1=1 AXEL) so you'll be always payed the sum you been expecting.
True that, I've been inspecting this project and the same conclusion popped up in my head