While there are many very interesting and funny geeklists, I feel there are way too many inconsequential geeklists as well. In that light, wouldn't it be wise to remove those of no or little merit?
One consequence of this would be all those people that did give their thumbs up recommendations would be silenced! Most GeekLists manage to get a few thumbs up recommendations so someone like them. should the community as a whole be allowed to tell these people that they shouldn't like particular content, which is essentially what would happen if you purge GeekLists that you (or anyone else) don't think have merit. That being said, I certainly do agree that there is a lot of repetitive GeekLists of marginal value to anyone but stepping in and saying what will or will not qualify as a "good" GeekList is a little heavy handed.
Or at least grouping those on the game entry page into "highly recommended" etc categories following the thumbs-recommendations?
This already happens. The GeekLists are ranked by order of number of recommendations with the highest ones being first.
Perhaps one ought to also have thumbs down, which could be given to geeklists of little merit?
Already exists in a way, although not in the way you are talking about I think. There is a thumbs down emoticon that you can add to a comment at the bottom of each GeekList you deem unworthy.