The thing I enjoy about let's plays is that they are exactly that, a person playing the game. I'll us Minecraft as an example: There is no one way to play MC, even if it is a survival series. Many gamers have different approaches to how they start a survival series, what they plan to do, and how they end it (if they end it, because MC doesn't have an ending). With a growing mod community, there is always something unique that can be added to the game. There are also series about building never before seen structures, or tutorial series. Jamziboy and FyreUK have some of the best creative builds I've ever seen.
The thing I don't enjoy about MC let's plays, is that the best part of it, being a sandbox game, is also very damning. People don't have the attention span for a traditional survival game, where nothing is cut out. Some things in MC take hours, or DAYS to accomplish. I spent an entire Saturday working on creating a trampoline out of slime blocks, and in order to make those slime blocks, it took 684 slimeballs! I had to cut the footage down to 40 minutes, which is STILL a longass video! With my survival series, Let's Play with Clay!, I have to do so many cut scenes to prevent viewers from getting bored easily.
That being said... I will say in my defense as a LPer (your personal taste does not offend me!) that female gamers who can play the game well, are hard to find. I typically add in challenges, creativity and exploration into the series to keep it interesting. But so many LPer's try to make MC be more than what it is, and despite my cutting some footage, I don't do that.