Hey, really love the name of the channel - how did you come up with it? sounds very memorable

As to the rest, here goes:
audio
the quality of your audio sound really good, and that is one of the things I usually pay a lot of attention toand I feel it would benefit from a bit of compression to even out the jumps in volume. Also there is a slight disproportion in volume between the game sound and your commentary, maybe bringing them closer together would be beneficial.
thumbnails
you might want to figure out a way to make thumbnails clickworthy and having branding, whether logo or pictures of you - something that makes the thumbnails your thumbnails. Also text is best absorbed together, putting it all over the screen makes it hard to read.
cuts
I usually cut only when absolutely necessary, and like to have as much of the story undisturbed as possible. I've seen people being very succesful with bothc approaches - editing or not, just find what works with you.
Let me know if you have any questions.