@jamietuley
It is possible to change the order of the emulator/systems in emulationstation, it is a rather manual process, from the command line
cp /etc/emulationstation/es_systems.cfg /opt/retropie/configs/all/emulationstation/
This file contains relevant system information for EmulationStation as well as the alphabetical list of systems.
Now you can edit this using nano recommended only if using the terminal directly accessed by pressing "F4" (type exit to begin emulationstation again)
nano /opt/retropie/configs/all/emulationstation/es_systems.cfg
(Hold Shift to highlight, Ctrl+K to Cut, Ctrl+U to uncut)
or
through the network share by finding \\\configs\all\emulationstation\es_systems.cfg
and using your windows text editor.

It is important to keep the enclosing brackets <system></system> intact when selecting the text to change the system order.

I would just skip attract mode. There are some pretty good themes in ES and you can still configure the order of the systems.

Pegasus FE is perhaps a better alternative to AttractMode