That does work, however if you use several pen colors for doors, you need a color for each of those and these have to be colors that are not used for anything else in the project. So in our case we have 3 pens each for doors and windows so for existing, demo and new for each of these thats a lot of unique colors that can't be used for anything else. Wer will probably wind up doing this and paring down some of the lineweights we use to reduce the number of colors needed. The other thing to be aware of is that when these are exported to ACAD, the doors become blocks. The elements within the blocks are on the mapped pen>layers, however the blocks themselves are still on A-DOOR, or whatever (or they remain on the parent layer of the wall) either way the consultants need to know in order to handle on/off freeze/thaw correctly for the nested items.
kevin s burns, AIA
massachusetts, usa
AC25 (1413), since AC6
Windows 10
Intel Core i7 -8700 @ 3.2 GHz~ 16 GB ram