If your SD supports it, I think you should go for it... Unless, you do not want to work 40 hrs a week as a mid (at least that will be their schedule at my store).
Conducting first interviews with potential new hires
Observing front end team to make sure that they are engaging with guests (pushing cartwheel/redcard, reading weekly ad, being generally friendly/engaging)
Observing patterns of behavior and potentially doing write-ups/seek to understand/coaching convos with team (including attendance issues)
Developing "talent" (i.e. make sure that everyone is trained for every front end workcenter including SCO and guest service and training certain people to close registers)
I still do break schedules
Identifying gaps in coverage in front end schedules and finding coverage
Communication with team via huddles/1 on 1 conversations regarding things that are important to their job (REDcard bounceback offer, events coming up in-store, other things as they may come up if I see that a lot of the team is having an issue with the same thing)
As of right now I also do equipment management by troubleshooting and sending back broken Zebras but I think this responsibility varies by store
Supply order for front end (including guest service supplies)
I'm sure I missed some but others are free to add to it