There is so much wrong with that video....
I'm all for tinkering around, but seeing as how the bulbs cost about $1.60 these days, how much time do you want to spend "fixing" them?
Removing the diffuser destroys the main feature of the bulb which is it's omni-directional throw of the light. He shows this very clearly, but thinks he's found a positive feature when he's actually created a negative feature. Putting holes in the base destroys the "damp location" rating.
Some people have too much time on their hands.
CD