At this point, I would be doing it for my own general coolness and the admiration I get from others. I also have a ton of Halumi and feta brining in various parts of my house and kitchen, and it would be good to put them in one spot. I am working mostly with brined cheeses, and I thought it might be a good way to store it.
However, where I have seen feta in a barrel, it is obviously not being refrigerated. I was planning to keep my barrel on a back porch type thing we have that stays at an even 55 degrees year round. Do you think that is going to be too warm to keep feta long term? People were making these cheeses a long time ago with primitive tools you would think I wouldn't have so many questions. I'm sure they just fished up some sea water and used it to store their feta in.