Trump not doing daily rallys is actually s good sign to me. It says they understand that rallys alone isnt going to do this. They are using resources better if they are focusing on GOTV and harvesting.
I agree with the first part. Rallies are a poor ROI. They're expensive and for Trump, his rallies have become something of a Grateful Dead tour. It's mostly the same people who follow him around from place to place.
As to your second part, I hope this is true.