Perhaps I’m answering incorrectly, but if the WiFi portion stops working, you should be able to set the unit up at the control input. But that may not be what you are asking. If the unit itself breaks, then no, I don’t believe you could use it. But, they do sell them separately if I’m not mistaken. I could swap out my 3D controller for the WiFi unit I think. I haven’t looked at that option, I’m fine with the 3D solo. And, I could do with the analog version based on how I use the unit now.
But, definitely wait for the model you want to get back in stock. You will love it, then go spend the extra money on some meat!