yes, sort of. Frankly I was already thinking about 14.1 video talking about player's mind, but here it applies as well. What Mika does is a voice-over though I think it would have been better if he was miked and talked right out of his head (rather than doing it later). For 14.1 this might be crucial as the best position to estimate balls layout is right at the table (as opposed to commentary booth).
I watched Volume 3 of Mastering Pool again and Mika doesn't say anything for an entire video (8-ball runouts only). That's kind of unusual compared to other instructional tapes on the market. Gives an impression Mika is just a guest star and it could have easily been Thorsten or whoever. Not to take anything from the product - it is of very high standards and I believe you did it for good, selected the words and did a script; of course Mika couldn't narrate that memorising it. But at the same time I didn't hear anything Mika couldn't have described himself. After all, he well understands what and why he is shooting and can describe what English to apply or which stroke to use. A narrator can only introduce a certain position and then give word to a player (I figured out examples during playback so I may be more specific if you require). It may come handy to have a big board behind a camera with key points written down, so that a player performing (Mika) doesn't forget to mention important aspects of a given position. I met Mika and believe his English is fluent enough to handle such descriptive manner and not being slow.
It will look less professional than with a voice actor but more common and, my opinion, easier to follow. Maybe it was for my foreign English, but sometimes I had troubles following the story, the description went too quick which I doubt could have been if it was a player talking. But DVD running time is limited so I suppose it might be the reason also.
There is a new DVD by Ralf Souquet about 8-Ball, but it is available only in German language for the time being, and I can't watch it for that reason, just watched a trailer on YouTube. But I'm sure he himself talks about position and shots pretty much, so you might take a look as well to have an impression.
14.1 high run would be great, but even greater to add it to an instructional covering typical break shots and some hints Mika might have about this game. Because it is unlikely all variety of breaks and patterns could happen during any run.
Thanks for your DVDs, looking forward to Volume 4! So long to wait but it is worth waiting for sure.