Talk about reaching... I don't see how Heath could be mistaken for Michonne when there is such a big height, body build and sexual characteristics (no breasts) difference. Even if Rick does not go to look at the figure with the bag over its head, the person who goes to look would immediately see that the person was not a woman, much less Michonne. Some could say the same could be applied to the tower remix scene with Michonne fighting a man and Rick thinking its Michonne that died, but that scene is done at night and in the distance when such things as sight, height, etc can be fudged and the body falls so fast it's not that Rick saw and recognized the person but he saw a body quickly fall. I think a better remix of the Holly arc would be if in AOW, Michonne goes missing, and Negan somehow gets intelligence about this and uses it to his advantage against Rick. Rick is not stupid though and would need proof of Negan's claim. If Negan somehow gets a hold of some items of Michonne (like her necklace, her headband, or even a top Michonne discarded during a struggle and had to scavenge and replace, etc) and starts sending them back to Rick, that could work to scare and mess with Rick's focus. It could be an interesting plot as both try to find Michonne (I would only play this out for 2 episodes) in order to get the upper hand in the war. I don't know, I would just like something interesting that deviates from the comic yet included our top main characters and not the usual duds like the Grady arc.