So, there are a few things I would like to see in the future.
Wall versions of foundations. For example, Yamatai foundations have a nice stone layout, but when you don’t need a foundation, or want to patch up stairwell gaps, you have to use the “paper/wood” walls which doesn’t look quite right in compared to if the stone was used.
Floor tiles, along with tiles that look like the layout of the top of a foundation. Yes, we can use ceiling tiles, but they can be rugged looking, some having spikes, or bumped up frames. Take Black Ice for example. The ceiling looks nothing like the foundation’s top nice wood brick layout. Would like something of that sort.
Walls with various cultural patterns on this inner side. Also, different shades/colors of current foundations, walls, etc.
Rugs. Need way more rug variations. From mat size to room size. Round ones too.
Even though it seems we have a lot of choices, it also seems really restricted. In comparison to mods, where they seem to quickly produce a large array of construction choices. I don’t use mods, as the private server I play on does not use them. I understand Funcom needs some extra income with DLCs, but there are basic things that should be in the game that isn’t and shouldn’t be at the cost of a DLC. A DLC should be for new cultural and exotic items and building blocks.