I find many great sets I like, but I do not want for the collector cache, so I unfortunately have to click on 'Thumbs down' to keep them out of the cache. I don't like labeling decent sets with the same label as the one's I'd like to set fire to.

So I propose.
#double thumb, single thumb.

#Undecided button. In the middle. (sometimes I thumb up or thumb down, later I decide I do not want to vote either way, or want to reassess it later).

If we had, double thumbs for something we really love for cache (must be in cache), single thumb something we like(but would prefer not to be in Cache), Single thumb something we dislike a little, Double thumb something we really don't like (God no keep this abomination out of the Cache). Also a button in the middle for undecided.