I think changing to your own blockchain is very important, such as you don't get affected due to some lags in the ethereum blockchain or overloading. In the future they can definitely think this.
How great would a dpos chain be that actually help the virtual world! We would love that, did you notice we talk in the whitepaper not about ERC721 specificly. At this stage Ethereum is expensive
specially for NFT, try to hop a crypto pepe can sometimes cost up to $0,8 each transaction this will not work for us.
We keep an eye on a lot scalability solutions.
Well one can build gas-free on chain solution like Vibehub did for their platform where the transactions happen on Vibe platform remain gas free and if user only has to pay tx fee if he withdraws the funds to his own wallet.