How is expanse different from eth?
One of the big differences is Expanse does not have the mining difficulty bomb (which some speculate will cause issues down the road for ethereum). Another key difference is that Expanse has a significantly smaller supply, additionally the majority of the Expanse supply is held in a community reserve fund for development and other expenses. In the future, this fund will be managed by the Expanse DAO. Other than that, by being an alternative project, Expanse is more flexible in development, Expanse doesnt have to do everything Ethereum does. For example, when Ethereum changes to Proof of Stake, Expanse can either choose to stay PoW for a while, switch to PoS, or ultimately change to a hybrid PoW/PoS (each of these scenarios are contingent on the collective decision of the community - i personally will be voting for hybrid). Expanse doesnt have to hardfork everytime Ethereum does, which again is attributed to the flexibility in development.