ive haven't changed mine in a minute but what do u guys think when should u change you're youtube' profile pic or even you're youtube channel. banner or should'nt change it at all.
If it's better why not. In my opinion if it's kind of a logo you've used for a long time and people associate it with your channel you should think twice before drastically changing it and you shouldn't change it around too much because that might even fall into some YouTube spam detection stuff and get you falsely suspended...
I feel your pic and bannor should represent you and what your channel is about somhow. and as you grow so can your chanel arts. I have changed my pic and BG a few times to reflect what im most focused on and why ppl should stay once they see my layout. as a smaller channel is say just pick somthingsimple and clean and just focus on your videos and the rest will start to make sence are you grow
Personally, I think you should pick what you want it to be and keep it. My profile pic has been the same since December of 2014. But if you REALLY want to change it, then it's up to you.