I hadn't heard the term before and thought that might be what it was, thanks for knowledges!
For flexible, responsive and 'dynamic' EA it would be a challenge for a UAV to do it since it would require a link, and links can be jammed or spoofed by......EA.
Depends on how worried you are about an EA vs. EA kind of fight. I don't think we really are (not trying to argue the right or wrong of that, just saying that's how it is) and there are plenty of scenarios where a "dumb" UAS with a smart pod would work fine. For the other scenarios, it's pretty obvious why stealth isn't a major concern, so the Growler ought to be fine for quite some time. I just can't see the point of an "EA" -35.