I would like something like Model tab versus Layout tab (Autocad-style) in Revit. Most times i don't work with lineweights and black&white mode. I do my designs in color-mode, which it's much easier to visually manage things. I use black&white and lineweights mostly for printing purposes.
It's very hard to manage rebar diameters and other small parts just by lineweights on a white background. Color-mode by diameter or by mark would help a lot. I don't want to set it up manually in every project. I'm looking for some automatic legend like architectural surfaces legend does.