plumbus_help:
I have a plumbing-related product that is sold on Amazon, that looks visually pretty much the same as our competitors product. It has great reviews and functions very well for our customers.So, I need help with coming up with an interesting and pleasing visual design, that preserves or improves the current product’s effectiveness and durability.
Sounds like you need an industrial designer. If there complicated mechanisms/moving parts that need to change, you may need a mechanical engineer as well.