I think having one board for corsets would work well I like having the two, but sometimes questions can span both areas, particularly with people just starting out, and two boards may be a bit intimidating for them to have to consider where to ask things without "getting it wrong" (hope that doesn't sound patronizing, I just know what I am like on forums myself
None whatsoever. It will fit better with the other boards, and if someone's topic winds up shifting from patterning to construction, it won't need to be split up or moved.
I was talking with Cathy about collapsing the two Corset boards into one, it would just be Corsets, and have all patterns, fittings, construction, tools, materials and finished work showcase on one board. Any objections?