You can remove recommended content by selecting "Not interested" on your home page, this will influence how YouTube suggests videos to you in the future. Here's more about managing your recommendations: https://goo.gl/mfD7rf
You can always let us know your thoughts by using the 'Send Feedback' option to help us prioritize feature requests: https://goo.gl/WdI0BK . While every individual report may not get a direct response, we do review all the feedback sent in to us.