Spacecoin will benefit from more services available for the community. Block explorers, mining pools, and electrum servers are a few examples.
Spacecoin needs liquid markets for users to buy and sell coins. Running AtomicDEX as a marketmaker would really benefit the Spacecoin community.
Visit our github and contribute to our existing projects. Or create your own software that works with Spacecoin. Wallets, games, anything you'd like.
dApps / Smart Contracts
Spacecoin has CryptoConditions which gives developers the ability to create dApps and Smart Contracts. Take a look at the existing ones and start building your own!