First off, Gargoss, what you said sounded fantastic to me. I didn't think much beyond the seemingly hinting comment that the quirky scientist made. I like the critical thinking.
Secondly, XanderO, I don't really understand what you're saying. We could transfer items from Gen III Hoenn or Kanto games to Gen IV Sinnoh or Johto games with the Pal Park (something that I mentioned in the original post).
HMs, like Key Items, can never be held items. Hence, they could not be transferred.