Where does a seemingly "halfway" ECM aircraft, as the article suggests, these "G-wired F's are," fit in?
Well, like the article says it gives them the option later on to madify them into Growlers if they so desire. It gives them time to go through the strategic and budgetary decisions on whether or not to get an EA aircraft, they have never had anythign of the like. It would be a major investment up front and over the long term for them so it makes sense they would not want to rush it but do something to keep the option open.
Keep in mind that EA aircraft are very unique and the US is pretty much the only country that maintains a fleet of them. The only other tactical aircraft that comes close is Germany and Italy's Tornado ECR's, and that is more of a Wild Weasel equivalent.