Just wanted to update with you on my progress since we're both having the same issues. I found that I got a better result with an underwire in the same shape as my original best fit but was about two sizes smaller. Also since I can't get my hands on industrial strength stainless steel underwires like the big lingerie companies, I doubled up the ones that are readily available to home sewers and got the same result strength. I reconfigured the cup again- a side power bar leading to a padded strap, four lower cup pieces and a contoured upper cup piece (think Parfaits by Affinitas Charlotte bra, only with more pieces). Now the only problems I'm dealing with are (1) a flattening plane across the upper chest which causes a quad boob effect and (2) not as much lift as I would like. To solve problem (1), I'm going to spread and curve the upper portions of the lower cup pieces and spread the upper cup. For problem (2), I'm going to try a sturdier but still thin padding with rigilene supporting the vertical seams. Keep your fingers crossed that it works. Good luck to you too!!!

this is a most interesting thread.
I myself wear a 30HH (cleo-Panache tango-ii plunge and Marcie balconet; I also wear a CurvyKate tease me, but it's a lot shallower and so I get a pushed-up slightly spilling effect in it)

My breast root is a little wider so I don't have the Omega boobies, though I often had difficulty getting a bra to fit (like "freya" an entire company of painful cutting in across the top of the breast)

my Best friend has omega boobies to the max though. We are both short and Busty, and wear the same size clothes... but we are such different shapes Underneath. It's quite Astounding to think modern mass produced clothing fits the pair of us equally well... which is to say... Kinda sorta, It'll do.

I am hoping to eventually make a garment that cinches the waist like a traditional corset, but has more modern cups so it doesn't look so odd under dresses. So I shall read along any developments you come up with...

*I just realised this was a year OLD! boo! how did it go ?