The corner trim options within the Wall Edit Menu:

Then later today, a Style A (left wall) and Style B (right wall) window trim:

Style A is per the previous drawing I posted on the board. Style B is where the sill trim extends past the jamb trim(s). Note, that the thickness of the header, jambs and sill can all be independently set. At some point I would like to set it up so that users can save specific configurations
I'm now looking at the interior casing for the windows and also at the baseboard and crown molding trim. I'm not sure how elaborate I am going to get with this with the first go around, this may have to come later after the initial release. I'm trying not to get bogged down in the minutiae but as I've come to realize there are a lot of details when it comes to a full architectural design.
I'm also starting to think about the Windows and Doors. The doors (man doors) are fairly straightforward in my mind, use a typical pre-hung door, I've got some details that should guide me fairly well in that regard. Windows on the other hand are a real mixed bag, there are vinyl windows with the nailing flanges (the type I'm most familiar with) and then there are the much more expensive types. Any particular styles, brands or suggestions would be helpful.