A number of us here are testing Timeshift... I find it works for me, thus far. The newest release of Mint beta v. 19 is touting timeshift as"
"In Linux Mint 19, the star of the show is Timeshift. Although it was introduced in Linux Mint 18.3 and backported to all Linux Mint releases, it is now at the center of Linux Mint's update strategy and communication. Thanks to Timeshift you can go back in time and restore your computer to the last functional system snapshot. If anything breaks, you can go back to the previous snapshot and it's as if the problem never happened. This greatly simplifies the maintenance of your computer, since you no longer need to worry about potential regressions. In the eventuality of a critical regression, you can restore a snapshot (thus cancelling the effects of the regression) and you still have the ability to apply updates selectively."
Perhaps @oberon and team might consider incorporating the tool in the next (or a future) release of Manjaro.