I've always wanted enough space and resources to do all kinds of experimental grows Ala Heath Robinson. It would be cool to not have to worry about the outcomes and just try a bunch of stuff.
I think it would be cool to build a 360 light room around a few plants, a vert bulb hanging in the middle.
I've wanted to try out a volksgarden rotary garden. I think it would be awesome to have a few on different cycles.