Hi Fletcher,
I'm happy, that I have inspired your thoughts. I'm not the specialist in 15 mm medieval ranges, but just have a look at War of the roses ranges. Maybe you can do a headswap by some of the figures, using early Landsknecht heads from other ranges, instead of the original heads.
It isn't perfect, but in 15 mm it will works.
My own forthcoming Bretten troop will use the Perry WotR range with the socalled european heads, the Perries sell separetly.
Maybe that helps you a little bit.