I'll push it into the 1.5.x branch and also provide updated version for i-MSCP 1.6.0 which is still under development. I'll give you the link once done.
I'll also fix a little issue: If you install the SA plugin later on or disable it and re-enable it, the order will be wrong again. I'll so also fix that case
Thank you for your tests. That is much appreciated
BTW: If you look at the listener, you can see that this was not so difficult to implement right? I hope you'll learn for next time