Greetings friend,
You have shared wonderful thoughts on the topic at hand, and I must say you've stated it correctly because with the introduction of new technologies like sharding and interoperable blockchains will definitely have a big impact on the future of layer 3 blockchains, especially when it comes to scalability. Sharding is like dividing the system into smaller branches to speed up the work. It creates smaller units called shards, each running its own transactions, which makes everything faster and more efficient. On the other hand, interoperability is all about connecting different networks together, making it easier for developers and even regular folks like us to use. This interconnectivity allows for sharing data and collaborating with other networks.

If the Steem blockchain adopts these technologies, it will greatly enhance scalability and the secure processing of transactions. So, in a nutshell, sharding and interoperability are paving the way for faster, more efficient, and interconnected blockchains. It's an exciting time for blockchain development. Good luck to you.