Leaving my own opinions out, I'm not sure Elo would really like RF. Her blutricity recipes were very "tedious", as many here would say, more tedious then the old 1.4 gregtech recipes when I lasted played it. Thermal expansion is very cheap compared to Elo's version of balance (not saying that's bad, or one's better then another), so I wouldn't expect Elo would require CoFHCore in any new versions.
As for FMP, as an active member of the IC2 forums I've heard greg say many times that he "won't support those Scala based things". Kinda funny @
King Lemming is disliking it too, good programers think alike I guess.