A big functional issue is that even at high zoom levels, the size of the component symbols at a typical door may be too tiny/ crowd each other out/ the underlying floorplan resolution may be too poor.
For example:
Are the symbols at the 3-0' X 8-0' classroom door useful?
Compared to camera FoV that may cover hundreds of sq. ft., a single leaf door may cover only 3-4 sq. ft. Fitting 5-8 different symbols in such a tiny area so they can be meaningfully used is an issue.
For this reason, I think the schedule callout idea is more useful. For example:
Keep in mind, the schedule itself can grow quite large depending on the level of detail it includes.
Most formal door schedules include things like door type, door dimensions, component input voltage, which controller components connect to, and maybe elevation views of the specific door.
Being able to print out a schedule relating to a door number is more useful to me that crowded tiny symbols.
We also deal with the issue of multi-floor layouts at the same time.
Does that help/make sense? Agree/Disagree?