Please, oh please provide more opacity/transparency options for zones, images, and pdfs.
This one gets us on every project so far. We do a lot of layering in our planning studies with existing buildings, existing drawings, diagrams and design options. We love the ability of the zones to provide us with so much ready information on area & occupancy, but they don't work for presentations as the colors show solid and don't layer with the existing image behind it. (or we can't use colored zones) So, we end up doing a lot of work manually, just using 2D fills, lines & typed text or going back & forth with photo shop for image transparency.
We're recently coming from Vectorworks to Archicad and that's one of our most missed features!