TubaTinker wrote: I just don't like to stand by and watch as the value of some of these grand old instruments is diminished by flooding the market with reproductions.
This hasn't seemed to happen in analogous situations such as the reproduction of vintage Colt or Winchester firearms (often by the Italians rather than the Chinese), but it does change the "market" for the vintage items from a "practical use" market to a "collector" market. In that case, values can actually go up. I'm a bit skeptical that there is enough of a "use" market to make the ophicleide a viable business decision in the longer term rather than more of a flash in the pan, but as you point out, there seems to be a lot of discretionary money around for such things.
Also, in cases like this, production of the items can sometimes create its own markets. It's arguable, for example, that the availability of reasonable-cost western-style single-action revolvers, reproduction lever-action rifles, and things like the Winchester Model 97 pump shotgun fueled the expansion of "cowboy action shooting" clubs and (national and international) organizations that in turn increased the demand for such products. I suppose I can imagine the same thing happening with period musical instruments.
Time will tell.