Just a thought...
For a few years I experimented with what could be called "Muiderberg by Responder," at least when Responder already has a passed hand. An example:
P-P-1H-P-2S as Spades plus a Minor.
P-P-1S-P-2H as Hearts plus a Minor.
I really liked this a lot, and I wonder if this could be usefully extended into unpassed-hand auctions. I mean, I really like 1H-P-2S as intermediate with a six-bagger, as this solves a lot of problems. But, there is something to be said for Muiderberg, as well.
When I started thinking about this, however, I end up with the lack of knowledge of the minor seeming to be more problematic in these auctions. A "specific minor Muiderberg" might work.
I don't know...just some rambling thoughts for a Wednesday morning.