Some can be ignored; they are just warnings. But others mean your project or navigation won't work as you intend.
I had never seen an override on the disk properties till someone had an example the other day. I do wonder if it was adversely affecting them. I don't know what it does, so I have no opinion about it. It shouldn't matter, since nothing would ever invoke it. But something must invoke it or it would not exist. But I don't see what it does, and I have seen quirky things happen.
Can you point me to the information re how it might help?