I don't like dynamic award pricing in general, but AC's dynamic award pricing model (so far only on its own metal) is really, really screwed up. If AC applies the same model to awards on its partners' metals (starting in a few weeks on some of its partners), it'd make UA's recent drastic devaluations look mild. Currently, Aeroplan points are perceived to be significantly more valuable than UA miles. That perception will surely change if Aeroplan uses its current pricing model to dynamically price awards on UA metal.