The goal is to instruct Eiichi ... encourage would be a better word ... to use his creative energy to create a unique and new piece.
I would request that this piece remain unique for a period of time TBD, negotiated. Keep in mind, the longer the time period of exclusivity, the more expensive the piece would be. This is a simple reality.
However, this could also be a new launching point for new pieces to be created by Eiichi after the commissioning. We would be a pivotal part of this process. We might see pieces years later that we can still see the influence of the commissioned work.
I think ...