1. Crowdfunding
2. Asset creation
3. Gateways (banks, financial organizations) for exchanging coins to fiat
4. Decentralized Asset Exchange
5. LPOS (Leased PoS)
6. Secure messaging
7. Smart Contracts
8. Prediction market(analog to Augur)
9. Decentralized reputation system
10. Decentralized secure voting system on the blockchain
Furthermore Waves is the first crypto/blockchain system implemented in Scala(functional programming language). The Scorex Platform(written in Scala, the foundation for Waves) managed to implement in 4k lines of code what Bitcoin could with 80k LoC. So with Scala you can do a lot more with less programming effort. And because of the much fewer LoC the execution is much faster.
If you think about the implications of the above you will also come to the conclusion that Waves is the best kept secret in crypto.
Thanks for listing all these out. I forgot about a few of them. Value will come! Everyone wants get rich quick though.
Personally, the crowdfunding and gateway features excite me the most.