FWIW, I used to shy away from tearing down a built wheel and reassembling, in order to re-use the hub, or the rim, depending on the case. But after reluctantly getting practice doing exactly that, my confidence has soared to the point that I now relish any excuse to deconstruct/reconstruct, or, if necessary, to build fresh from any combination of new/used/NOS components. I'm also not averse to re-using spokes, especially if none of the spokes from the original build has broken in fatigue. Extra marks if the spokes are stainless, but I was happy also to re-use a set of butted galvanized spokes, twice, rather than spend the money on new spokes, for subsequent budget wheel builds.
To get to the point, if you are fond of the rim but want to ditch the Helicomatic hub, do some reading up on wheel building, set aside a few hours on the weekend, and have at it!