Constantinople could help reverse the downward trend. Improving functionality will in the short-term keep users on the network, rather than moving onto rival platforms. Laying the foundations for major updates, the Caspar protocol, as well as scalability infrastructure, will show the community Ethereum is improving and addressing current pain points.
https://cryptobriefing.com/constantinople-ethereum-update-ether-price/

I strongly believe that this project will give a new life to Ethereum.