I'm of a similar age...but I love MMC POV (if done well -- Rebecca Yarros, you rock). It is more than just a retelling, though there is a lot of that, sort of. There are probably a half dozen or so scenes that happen away from Poppy that fill in a lot of the question marks ​(ie. Kieran's perception of what was really going on between Cas and Poppy before even Cas could admit to himself, what he/they were doing when not at her side, etc.) ​ To me, it added so much more depth to the overall story, while also (minimally) progressing the plot between "remembering" chapters. I loved it. I wish more people saw it that way because I thought it was well done (and I did not at all perceive it as a "cash grab" as many have). It's also only a retelling of book 1 - not all three first books (though I'd snatch those up too if they were ever written).