In daily mix 1-6 you have the option to mark a song as hidden (I guess this is as close as it gets to "thumbs down" or "dislike").
Say I mark several songs as hidden i Daily mix 1 one day. The next day a few of these songs end up in the same Daily Mix 1 but as hidden.
I mean if I dislike the song one day I probably won't like the same song the next day.
A similar thing is that if I hide a song in Daily Mix 1 it might actually appear in Daily Mix 2 but marked as new, i.e not hidden (happens a lot). A song hidden in Daily Mix 1 does not mean I will like the same song in Daily Mix 2. Instead I have to mark the same song as hidden in Daily Mix 2 aswell. C'mon.....I mean....seriously?
Instead of adding songs I marked as hidden to Daily Mix 1-6, maybe add new songs that I haven't heard and discarded yet. I like new music and it is in Discover Weekly/Release Radar/Daily Mix 1-6 I often find these hidden gems I wouldn't normaly listen to.