Of course it is a stunt. A suit couldn't possibly be adjudicated in the time remaining in Obama's term. But maybe the mainstream media will talk about what Obama has done. This could be a way to keep Obama from doing more stupid stuff.
Anything that calls attention to what he’s doing is not a worthless “stunt.” The only thing that seems to attract any media attention now is legal action, since it’s clear that Obama opponents (from the most conservative to the most liberal) can say what they want, and the media simply ignores it. But something concrete like a lawsuit might have more traction.
Civil suits don’t get much attention, but if this suit is accepted, it will be the first time that anybody is granted standing to challenge Obama, so even if it doesn’t get adjudicated, it will mean that the problem is acknowledged.
I honestly don’t know what else could be done. The pitchforks and torches meme is cute and lets people vent and makes them feel good, but realistically speaking, that’s another thing that’s not going to happen.