TBH, when Manjaro broke it was my fault, I know it was my own fault, and I feel if I was running EndeavorOS the results would've been the same if I did the same actions.
That said, yes the miss-matches repos drove me insane, especially as someone who likes keep my update number at 0, and I can't update AUR packages. And there were a few niggles and grips here and there. But as a power user, who didn't want to touch a terminal, Manjaro has the best set of Setting and Configuration GUI's I've used thus far in Linux. If another distro took what Manjaro did, but kept it to the Arch Repos, then I'd use it in a heart beat.