Alright I am going to give you my honest feedback.
Branding:
Channel Trailer- I think you could benefit from a channel trailer to give people a good idea of what your channel is about rather than having your most recent video in the trailer spot.
Channel Banner- Your banner does look well put together and appears to have some thought and intent but it doesn't really tell me what your channel is about at first glance. I would recommend having something that represents your personality as well as your gaming content.
Video THMBnails- Alright, you gotta get some thumbnails bro..... look into some sites that have some pre-made templates for the games that you play here is a template for GTA 5 that you can edit in photoshop>
http://www.mediafire.com/download/ds1ol4oqjp1m4in/GTA+Thumbnail+Template.psd < thumbnails are very important to say the least, they provide the first impression for your video and draw people in.
Playlists- Update your playlist reorder your newer content to the top of the list so that your channel looks more active and scrap the playlists that you no longer update like Halo 3.
Annotations/Cards- I watched a few videos and didn't find and annotations or cards, i recommend using them to redirect traffic to your premiere or new content. You have an outro with your last video but no annotation to click on.
Hopefully this came across constructive, I also have a review my channel post check it out and give me your feedback>
http://yttalk.com/threads/review-thefreshbiz-help-me-out.187570/
