@petalbot and @DieterPrivate: Feature or bug, that is definitely the question! I could see it either way. I had already requested the ability to enable separate colors for front vs. backs of doors and windows, but I meant for that to be within our control!
@Tart4cus Ah, the glitch you're reporting seems to be another twist on the vanishing doors/windows bug @RyeCris16 demonstrated on page 5. Objects also disappear if you place them on the walls. It's again a graphical glitch that you don't see until you go up a floor. And very interesting that, as you said, it doesn't happen unless the stairs take up that entire space. Here's a couple of pictures of this glitch in action, so that Maxis can take a look:
Ground Floor View
http://i916.photobucket.com/albums/ad5/SFsimpics/Sims4/Building/groundfloor1_zps9e7f966f.jpg
2nd Floor View
http://i916.photobucket.com/albums/ad5/SFsimpics/Sims4/Building/2ndfloor1_zpsb8057069.jpg
As for your requests, we've already got skylights, re-colorable ceilings, and copying modular objects on the list (and for the rooms, you can already save one to the Gallery and then place it from there - not as quick as a CTRL-C, CTRL-V, granted, but still effective).
I like your tinted window request, especially if it let us make the windows reflective (I want to make more mirrored houses. :p ), but I'm guessing that asking for new windows with privacy glass would be more a more do-able request.
With regard to the adjustable wall height and dynamically sized windows, while I'd love to see these, I hesitate to add them to the list because I can see both being such a programmatic nightmare. When it comes to the foundation, nothing can be placed upon it, and there are no interactions that involve it - no doors, windows, décor, etc., so it's easy to see why they could put it on a slider. The only thing they had to worry about was getting the stairs to resize to the different heights. But with walls and windows, there would be so many interactions and other objects involved...you're really back to CFE at that point, I think (and I really don't want it back). Don't you think that if they just added half height walls along with a couple more levels and just let us place multiple windows per tile, it would be enough to get most of what we want with regard to more complex architecture?
Yes, it would be great to edit the neighborhoods! I'm shocked we don't already have that one on the list. :o
Regarding the Gallery, I'll add your 30 day request, but I'd like to direct you to
this thread where we've discussed plagiarism and possible solutions. I believe that the Gurus, while never formally acknowledging it, are well aware of it, and I do have a request on our list for the "Original By" to stick unless the lot is bulldozed.
@ByondTime89 it's on the list!
@Cerrydd Yes, it's your enlarged shelves causing the problem. Shelves in particular are tricky when sized up. Their collision box extends both further down and out in front as well as out in back (behind the wall). I wouldn't say to give up on them entirely, but you need to use them well away from other objects, and it takes some experimentation to figure out just how far is safe.