Do you have experience creating "fantasy" UIs? Basic UX/UI skills won't transfer over, you'd need additional skillsets and an eye for it.
Complex-tight layouts will feel cluttered to people who have more difficulty with differentiation, visually processing contrast - or aren't motivated/driven/interested to understand what they're looking at. If you can expect the audience who needs to learn the interface will be motivated to learn it, then it can work.
I've had similar desire to see higher quality, more complex "fantasy" UIs and I could see parts of projects benefitting from such an interface - however I'm a long way off from having the funding and experimental budget to move in that direction. Maybe I'll be blessed enough that it can happen in 5 years.
Complex-tight layouts will feel cluttered to people who have more difficulty with differentiation, visually processing contrast - or aren't motivated/driven/interested to understand what they're looking at. If you can expect the audience who needs to learn the interface will be motivated to learn it, then it can work.
I've had similar desire to see higher quality, more complex "fantasy" UIs and I could see parts of projects benefitting from such an interface - however I'm a long way off from having the funding and experimental budget to move in that direction. Maybe I'll be blessed enough that it can happen in 5 years.