Highest Level Benches show only epic items

After making the highest level crafting benches, I noticed that only the epic items are shown as craftable.

As far as I know, this is intentional. Don’t blow up your lower-tier benches if you need non-epic stuff (such as for cosmetic illusions).

And why I end up having to make much larger bases then I like.
Why have one bench do the job when you could have 3?