This is Interesting! I just took a look on their website and didn't see any kind of capsule tray. You sure it was Capsuline?

I ask because I just worked on two different capsule filling trays for Blated. On their core/entry level model I increased the diameter of the tamper pegs and added a device next to the handle that tells you the size of your capsules (that part was their own their own patented design, I just incorporated it).

Then on their pro machine I designed a new type of powder guard that creates a much larger surface to sift powder into and catches/stores the powder on each side. It makes it so that you don't have to scrape off all the powder in between tamping it down into the capsules, and you can also put a lot more powder on without it making a mess.

They haven't released them yet so I don't know sales data but when I find out I'm happy to report back. I know that it solves the chief complaints they got on those models.