I don't stack my cymbals. That would damage them from the weight, especially if I stacked ALL of them. I store them upright, on their sides, in bags. I don't see anything potentially considerable of "cool experimentation" in this scenario, unless people separate the cymbals by profile (most pronounced to flattest), on a large rod, and with cymbal felts between them so none of the edges touch any of the bows of the cymbals above and below them. That would be hard to accomplish with 70 cymbals, and a quite impressive feat. Plus, when you want to get the 60th one out from the top of the stack, you would have to remove the upper 59. Nope, that won't work for me. I'd like to hear about some practical, cool experimentation with this as well...