Thanks for the advice 40wattstudio.
You're right, demos and completed games should be rated differently. Although, I'm going to make sure that my let's plays and reviews of games are two separate videos. One geared for entertainment with special effects thrown in (like graphics etc). The other is more educational or discussion oriented.
I'm not really sure if I want to use a rating system like 9/10. It's limiting and sometimes difficult to use with unique indie games. I'm considering making review videos more about constructive criticism or critical analysis as appropriate. This is partly because I want to specialize in demos and free games. Partly because I don't like the classic "blank/10" scoring system.
What would be a better style of review commentary for indie games, demos and free games? That's fair?
I'd like to comment about what I felt worked and didn't work in the game. But, I don't want the negatives to discourage people from playing the game. (In the case that there were a lot of bugs, I'd probably choose not to upload the video and instead contact the developer.)
I'll also make a note to edit or replay sections as appropriate for Let's Plays.