Using the NWC plugin daily, one cool thing for example is that you can run Electrum as daemon (headless, no GUI) on some server.

You can now also do submarine swaps over nostr to get inbound liquidity, there is also documentation on how to run a swap server to provide liquidity for submarine swaps:

https://electrum.readthedocs.io/en/latest/swapserver.html

This is for advanced users that want to earn fees.