It's funny, but some peaple actually like the looks of the fabricated one better and that design hasn't been abandoned. Also funny is I started with a cone for the cast design and considered a rolled cone. I won't say that those can't work for some applications, but what you see is the result of having tried quite a few options both from a production and an application perspective.
I am enjoying this thoroughly. I think you have a great idea. I am an engineer and I own a machine shop that makes industrial machinery and if I can avoid a casting, I will. Unfortunately, castings are a big part of our production. CNC machinery, small lots, and design flexibilty mean we often machine from solid bar stock rather than mess with having expensive patterns made and having to deal with the foundries. Bar stock is fast to production and sale.
Your casting looks great. I would rather find a way to avoid them. Ultimately, stamping or rolling is the way to go, but that leads to expensive dies, that you must invest in up front.
For low production numbers CNC lathe or mill work and welding fabrications means you don't have a very high up front investment, although the part cost may be high.
The fabrication you showed looks a lot lighter than the casting. There are a lot of very stubborn people in the world that can't get over what they think things should look like, so you have that to consider too.
I have had customers who have equipment break and then I fix it and it doesn't break anymore and they get all hung up about why I had to modify it to stop it from breaking. They always say, it's been like that for 20 years. Was it breaking 20 years ago? No. Was it breaking repeatably before I fixed it? Yes. Is it breaking now? No. Then the reason is it wasn't 20 years old 20 years ago or you are running it differently than 20 years ago and you won't tell me. But I fixed it, so accept that or pay me more money to figure out what you night shift is doing to it.