Thank you for sharing your use case on multiple room usage. We are currently working on a prototype to bring similar functionality in Design Tools.
We are aiming to enable multi design for one ISX number so that you can create multiple rooms and generate one single quote with different CTO and configuration reports.
So far, we have tried introducing this feature with Uniflair configurator which is available in US and Canada regions. We did receive mixed feedback on that and are currently evaluating its feasibility. We will keep you updated on its progress via Release communication methods.
Please let me know if you would like to participate in user test events for this functionality.