I'm working on a high-rise that seems to be heading down the path of having 2 facades that are sloping to the top, and joined together in a curve that happens to be vertical at it's tangent point. I've found that trying to use the fixed distance option on a non-planar curtain system is somewhat unpredictable and won't be able to get me a consistent sill height about the floors. It also makes all the panels slightly different, unique sizes to fit the curve. The designers are looking to hold a constant 5ft module in the horizontal direction, which means there will actually be slightly more panels at the bottom than the top since the perimeter at the base is greater. In reality it ends up being about an inch difference from the top to the bottom. I'm trying to wrap my head around the best way to actually model this and short of making a separate mass for each floor to apply a curtain system to, I'm at a loss. Even that wouldn't be terrible if there wasn't a possibility of the slope changing down the road causing me to need to start over from scratch. I'm looking for some insights into how the exotic design guys would handle this. I'm pretty good with curtain wall, but I try to avoid curtain systems whenever I can for this reason.