Would love to see someones take on the style of iiSU
For what it’s worth, I am aware that a member of the muOS community is currently working on a theme inspired by iisu.
However, this is not the place to submit requests for themes - these themes are made by ordinary people and members of our community that want to contribute and release their own themes out into the wild so that others can enjoy their hard work. These people are not employees that make things according to orders.
If you want to see something, the best thing you can do is contribute to making it happen. I recommend you give theme creation a go since it is very easy to get into, and the best way to start is by downloading a ready-made theme and then opening it up to see how it’s structured and modifying parts to get the hang of how to make a theme.
The other option for you would be to commission such work, if theme creation is not something you want to do. However this is also not the place to organise and solicit commissions.