Wow, I never know about delete edges technique to restore faces..
First time I read article I can't understand what are you doing, I thought that some parts of the article was missing. But whe I reread it I made the same thing in moi and was surprised, how is simple to remove holes. I used different methods to remove holes that is not as simple as yours. And how you restore fillet by selecting all edges and delete them was amazing) I thought I know MOI not bad but still there are some features I never know)