Re crosswind landings - not strictly harmonization more control effectiveness but Transport Canada require any CAT II aircraft to keep within the GS & LOC limits in AT LEAST 15kt Crosswind, 25 Head & 10kt Tail (see Working Note 4).
Postings on other PPRUNE forums refer to control ratcheting with spoiler/aileron interaction and it's my experience that most TPs & AP Engineers on current commercial jets try to get the overall harmonization as smooth as possible but it's very difficult to get, say, the same effect at both HVY/FWD & LT/AFT especially when the weight can nearly double between the two extremes of the envelope.