I am not from around here, but isn't it possible to just bind /system to system.img in any directory, and then boot it from there after the same has been done for /data and /cache?
 

https://www.dropbox.com/s/ho7noezbf3ph0l6/CrossMiranda.png
R.I.P. Miranda Nicole
An innocent soul, who deserved to live a lot longer. We all miss you.

R.I.P Alif Shahriar
A true friend, no longer here in this world, but always there in our hearts. We sorely miss you.

Device config:
ROM: MiniCM10/9
Kernel: oxydo@unikernel-1+
CPU (min/max/governor): 480MHz-787MHz, smartassH3
I/O Scheduler: Deadline

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