What an excellent list! I keep running into things that make me think "this sucks, it would've been better if...", but it looks you already got everything covered.
"BryonyRae;12962503" wrote:
Floor tiles (specific style was Brick and Blush) change orientation on their own after manually placing them.
1. As I placed them:
http://i916.photobucket.com/albums/ad5/SFsimpics/Sims4/Building/flooring1_zps638e5baa.jpg
2. What the game did to them:
http://i916.photobucket.com/albums/ad5/SFsimpics/Sims4/Building/flooring2_zps7f0353c1.jpg
I tried deleting and re-doing them many times in as many different ways as I could devise and it still happened in small areas (most of the walkway styles stayed in place). If you want to see it in action, download my Rock N Roll House and take a look at the paved area where the tables and chairs are placed by the pool.
I don't even know how these tiles are supposed to work, they seem to do whatever they want to! Same with the foundation style with diamond shapes. The diamonds place themselves wherever they want to, there's no control over them (unless I'm missing something?). It often ends up with not evenly spread diamonds, which doesn't look as good as it could.