Hello! The change was inspired by the Beats system from the imo absolutely amazing FitD game Slugblaster. In that game, Beats help ground the game (which can have a sillier tone) in real human emotion. The reason I wanted to use Beats in Bump was because downtime in MOTW-type media is not just recovery and training and projects -- it's also drama and conflict and emotions. Beats felt like they reinforce this better than Downtime Activities interspersed with free play. Now, I don't know whether I fully stuck the landing with how I implement them here, but I'm overall pretty happy with how they turned out.
Of course, it would be easy enough to swap them out for more traditional DTAs as well, if that's more to your liking.