I get you're excited, but old school CRTs can easily kill a person with the discharge off a capacitor, even when they've been unplugged for a while. It may not be a good idea to casually encourage people to go start hacking on them.
Note that suggestion #1, #2 and #3 do not involve modifications of the TV set (and the voltage is a small video signal), so it's risk-free, and should already covered the vast majority of the cases. As for #4, and #5, are more of a possibility and requires knowledge of the internal TV circuitry, those who already have the knowledge to do so, should already be well aware of the dangers involved.
Yeah CRT anything is bad news to go tinkering with. High voltage components and the tubes can violently explode if you compromise them, I tossed a monitor into an empty dumpster once and very nearly soiled myself as it happened to fail just right. If you have one open and the CRT tube fails you could very well be picking tiny shards of glass out of your person.
