On the one hand, I have several patents for project(s) that took years to develop. The processes are unique, very difficult to replicate, and should be offered some protection (if we agree that motor designs should be protected). The companies I have worked for would defend the IP and would constitute these as "offensive" patents, because they would use it to actively stop upstarts.
On the other hand, I also have worked with lawyers to just patent ideas I had off hand. These are "defensive" patents, and go into the patent arsenal, containing hundreds to thousands of patents, to be used if someone decides to sue. These are just "ideas" and often will only have the most basic design(s) and testing (if at all).
Unfortunately, it's impossible to tell the difference, and more over - I don't think it's fair (personally) to patent something that doesn't exist in reality yet.
What's even more frightening to me personally, is that I am morally opposed to patenting... However, when someone offers me $1k, $3k, $5k, etc. to work with them to file a patent I'm incentivized to file. I have to be pragmatic for my family.
For reference, I'm on or currently working through filing close to 150 patents.
For each one, I donate a portion to the EFF; for what it's worth...