True, the SH upgrades don't make it a real LO jet but the improvements are still worthwhile as the USN and Australia will be using their Superhornets and Growlers for quite awhile yet.
Unless Boeing receives more Super Hornet orders very soon and specifically for the Advanced Super Hornet, the ASH will remain a concept and nothing more, if there are no further orders for new airframes, then it will be up to the USN to decide if the Super Hornet becomes a reality or not.
Yes there is always the possibility, regardless of how remote, that the USN might decide to upgrade the SH to ASH or probably more likely take components of the proposed ASH upgrade an apply them to the SH fleet.
It maybe for example, that the conformal tanks and upgrades to more powerful engines could flow through, but again it would be up to the USN to be convinced of the value of doing such an upgrade and of course taking into account the development costs too.
And that brings me to the RAAF, the SH that we purchased are exactly the same spec as the USN SHornets, and as I understand it, the RAAF has been very clear about the upgrade path it will follow for the SH, and that is to follow the USN.
So unless the USN adopts some or all of the ASH enhancements, then I don't see anytime soon that the RAAF would go to Boeing and pay the development costs associated with upgrading such a relatively small fleet without the USN also going down that same path.
The ASH may well prove be a leap in capability above the standard SH, but without orders, or the USN deciding to upgrade it's existing fleet, then I'm not going to hold my breath that the ASH will ever become a reality.