I've heard there isn't going to be many more updates, but this was just an idea and maybe it'd be passed. I've talked with some friends and they've somewhat agreed, so I thought "what the hell" and here it is.
I realized once I started playing N and S that having more sapper builds was pretty awesome. The tent in N and S reminded me that there could be much more in NW for building. Some ideas (from others and I) would be small fort things (wood walls or something like that? they'd take long to build?) non-explosive crates/wood blocks (this was from a guy who noticed that building with squares is quite easy) something like the tent in N&S, and there were many more but I can only remember those.
I haven't heard anyone else suggest this topic, but I think it'd be nice to have a few more sapper builds before NW is finished having large updates.