Here it goes lol,
I do like your video's
(yes even minecraft, haha) but when it comes to the audio/commentary i would suggest going into the game options and turning down the volume in game, that way your audience can hear you speak over the gameplay and maybe speak a little more
(what i know can be hard if your getting right into the game)
Although i do agree with TheMLGenies about it being super hard to convince people to watch a video over 20 minutes, in some cases for example like fifa if the video is a match in a season then, that can run over the 20min mark
(depending on your match length settings), and there are people willing to watch a long video, like myself. But there are many people who are reluctant to watch a long video, and will just over look a 20 -30 or even 40 minute video simply because they prefer the shorter ones.
Your channel banner is good i do like it but its got that cod theme going on if i can suggest including some sort of visual of all the games you play/going to be playing.
The thumbnails whoever made them is really good HAHA, if anyone seeing this part and wondering why the laugh it is because it was me that done Crusifix's thumbnails.
All in All though i do like your channel