[dmun]

Also, if you are a manufacturer, We would like to work with you to produce a unit that bridges the entry, has a tapered transition to a flue tile or stainless chimney unit, and a curved surface for the next row of firebrick. We have lots of cad designers, and woodworkers to produce forms.

There'd also be a market for a plug for the top of the dome, which is the fussiest part of the dome to piece together with brick pieces.

I don't know if your production facilities would accomodate larger-than-firebrick units.