We are looking into providing additional capabilities to the Forge hosted secret storage such as secret rotations, increased limits and multi-region support. However these are currently in our longer term roadmap.
It would be great to better understand your use-cases and must-have requirements for secret storage so we can prioritise the features accordingly. I can open a new feature request on the Public Forge Jira Board (which other Partner’s / developers can vote up) or I can setup a call to discuss in more detail. Let me know what works best for you.