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If I try to apply Keyframer FX along a layer, which has repeated frames set as it's post-behavior, the FX is not taking effect. which means that instead, I need to set faux-fixe, or, if I work on 2s - copy paste all the frames along all the layer. which makes the post-behaviour less useful imho.

Actually it brings the second question - when animation is in Faux Fixe, it's impossible to apply the FX on Heads only. It would be nice if Faux-Fixe could actally repeat the animation with all it's instances positions and not treat it as only on ones