Well the HIM part of HIMARS is what makes them hard to hunt, I don't think the Patriots are as mobile and also are defensive so less proactive so to speak. Probably wouldn't be effective to try to rush it with drones or missiles but would be an easier attempt.
Economist had a bunch of interview with Ukrainian officials and such, this one was interesting
An interview with General Valery Zaluzhny, head of Ukraine’s armed forces (archive)
"TE: What do you make of Russia’s mobilisation?
VZ: Russian mobilisation has worked. It is not true that their problems are so dire that these people will not fight. They will. A tsar tells them to go to war, and they go to war. I’ve studied the history of the two Chechen wars—it was the same. They may not be that well equipped, but they still present a problem for us. We estimate that they have a reserve of 1.2m-1.5m people… The Russians are preparing some 200,000 fresh troops. I have no doubt they will have another go at Kyiv"
Not sure if the talk of this second offensive is just more scaremongering for the wishlist.