I give you a standing ovation Helena! You make some excellent points. One of my biggest critiques of students & speakers is when they read what's on the power point slides. First of all this is insulting to your audience's intelligence as they can read for themselves. Also, when a speaker does this they tend to put way too much information on the slides as they are using these as they're speaking notes. So this needs to be avoided for many reasons.
Also, your suggestion to review recycled presentations is great. I'm all in favor of reusing, but always review… >>>