Eric Martindale here with Blockstream! Let us know if you need any help setting up a sidechain for this. It makes a lot of sense for your use-case.
Given sidechains are already fairly complicated to understand[1], I'm not sure I get why suggesting their use without showing the use-case here makes a lot of sense for building Blockstream's business model. I guess that's the difference between promoting a company and contributing in a conversation.
[1]: https://www.elementsproject.org/elements/asset-issuance/