Hoppers can transfer items down, and down at a 90 degree angle, but why not sideways? It would add more variety to how you transfer items. Also, then you can make chains of them to transfer items in the same way the item ducts in mods work. This thread might be a derp, though, because I am using reference from what I have seen.
If you are planning to make a suggestion, please read this.
If you want to know more, you can read this.
For those who complain about post-Beta generation, you might want to see this.