When to use projections in a performance piece

This has been happening a lot, and i feel partially responsible (What with the fact that i am slowly becoming a video designer) but there are some times when using projections is probably unnecessary. so here is a helpful guide if you are a director and are considering using projections for your next performance of Rosecrans and Guildenstern are dead, or you have an epic dance piece and you want a video to create scenery, either way you should ask yourself these questions before you go and shell out the time and money required to get video added to your show .
1. Are the projections going to help tell the story? 
Seriously stop and think about this one. when those videos go up on screen how are they going to move the plot along? this is probably the most important question that no one wants to address, and if they arent helping tell the story then whats the point? well it could be used as digital scenery....
 
2. Are the projections being used as digital scenery?
Ok so there's a Giant painting that's supposed to be on the stage that the actors constantly refer to, and you don't have a good scenic painter. So you grab a projector and throw that painting up on a screen, makes perfect sense, painting is on when its supposed to be surface is blank when the painting is not supposed to be there.  when it becomes a problem is when the play takes place in Paris and there's a projected backdrop of the Efiel tower. not only does this stink of cheesy vaudevillian theatre, except the cheesy flat is replaced with a projection, but it basically clubs the audience over the head with the setting.  this is unnecessary and borderline insulting, the audience has an imagination, the actors should deliver a performance well enough that the audience will suspend disbelief  that they are in a theatre (and if they don't well you have another problem on your hands that no amount of video will solve) so why would you need to illustrate the location so obviously?

3. Are the projections being used to Club the audience with a message?
Now lets say you have a show thats all about death, and for some reason you dont think the audience is going to understand, what its all about, so you get some projections and throw them up on a screen and make them pictures of people in hospitals and graves and whatnot. this represents a huge problem. first off you aren't giving the audience due credit, and if the audience cant actually understand the piece, well then perhaps you should re-think the shows you're doing.  Last i checked, and feel free to correct me if i am wrong, but chances are if you are going to the theatre to see a show, you don't have the IQ of a Jersey shore cast member, Or you are being forced to watch it for some class, but either way if you treat your audience like idiots, well dont pick plays that are too cerebral. and if you need projections to help the audience understand whats going on, well pick a more accessible piece of work