What a great way to illustrate WILDing… I love it! I read this post a few days ago and have been practicing the principles behind it as I fall asleep every day. It works so well!!
I think this idea has really illuminated an aspect of WILDing for me that other how-to’s haven’t quite managed, which is how to balance alertness and sleepiness. Previously, I would take the techniques I’ve read about such as counting or the 61-point meditation, and I would find that I just wouldnt be able to fall asleep. My mind was too focussed. Sometimes I would spend an hour or two doing this, determined that if I continued, the hypnagogia would come, just like they describe in the books. Eventually, I would sometimes begin to feel a slight tingling in my body, but as soon as I recognized it (and stopped counting) it would leave. Or, if I continued counting, the feeling would remain but never escalate to anything more. 
After many attempts, I generally gave up on those WILDing techniques, and allowed myself to simply watch the hypnagogia imagery and sensation come in. This way, however, I always fell down the rabbit hole into sleep quite quickly. 
Now, however, with the understanding that I have to have a soft concentration, I simply wait until the hypnagogia kicks in, and then begin counting gently. It has taken me so much further through hypnagogia than I ever have been before. I haven’t successfully entered a dream yet, but I am confident the progress will come with this method.
Essentially, you just illuminated the final barrier that was hindering my WILDing progress. 