Lupins, yes did a trial plot of white lupins a few years back with our local research station. It went well but never really got moving. A part of the reason was that there was pretty well no research funding. As an aside, I know the research set up here well and much of it is now derelict, a national disgrace for a country that should be a major EU agri-food producer. One of the things that annoyed me about the new CAP proposals was to see the emphasis on R+D and knowing that the Commissioner was Romanian and his own country has dramatically failed to support its own R+D set-up.
From a soils/fertility perspective and simplicity perspective I have always been a fan of beans. It is also a crop I grew up with so maybe there is bit of sentimentality around - still essentially a peasant at heart! I also happen to think that a very simple system is what will work here, simple housing (it is a dry, windless cold), some (non-locals) are even talking of out-wintering, hay (continental climate that can produce 3-4 crops of superb lucerne hay), triticale/oats and something for some extra protein, although if you can keep the leaves on the lucerne, it may not be needed. One of the problems we have to resolve is to get people to understand the need for protein for animal growth, they expect them to grow on rubbish. If you look at my www.highland-agriculture.com website you will also see that I am also promoting the use of British breeds that we think will do well on a forage-based diet. All very old-fashioned I am afraid.