The Lightning Readiness Report used to have a list of items that were not compatible. However, now, it doesn't list the javascript buttons. When you go to the converter tool and scan, it finds some js buttons, but not all of them. Does this mean I have to go through every single object to look for js buttons, since the report isn't doing that? 

The report seems a lot less useful than older versions, and I don't feel like I can trust the output. I will miss dozens of js buttons(and who knows what else) that I know are there, based on a report from last year.