Run script, systemctl hook after a UI config change

Hi, my use case is quite simple. Before switching to openmediavault I was running a home NAS/media server on ArchLinux.
I boot without mounting a main storage and then I run a simple script

# import map_luks - "expect's" script.

map_luks /dev/mapper/vg0-home home $pass 1> /dev/null 
mount /home
systemctl restart transmission smb nmb syncthing@sync.service

The thing is that I didn't want to start some services without decrypting a given partiton.
2 questions:

- do you have a plan to support a similar use case in newer releases

- how can I achieve a similar behaviour, e.g. by login to a shell and running a custom script that would change coning (decrypt & mount partition) and restart some services.

Guys, any update regarding this thread?