Although I can't say I really liked it (I don't really like the lets play format in general) I really hope the negative reception to this doesn't scare you off from trying out new stuff.
I think a large part of your fanbase love your work so much because it's not just the same crap everyone else is making. There are a million other people doing lets plays, but how many people out there are creating original and interesting content like Freemans Mind or Game Dungeon? Trying out new ideas is important for any creator, but I think the lets play format itself kind of works against what you've built so far.
Then again, maybe I'm biased because I really don't like lets plays...