Pjman - 11:48 pm on Apr 15, 2012 (gmt 0)
Glad you brought this up. I have been thinking the same thing.
I have been planning on reviewing pages that have low visit counts and "noindex" them for the short term and then rework them over time before removing the "noindex" tag once they have better content than any of the competitors that are ranking much higher.
I do find that post panda (with a Pandalized site, it doesn't mater how much better those pages get, I can't seem to gain rank on those pages.
I ran a test now 4 months running. I took a page that use to be #1 pre-panda, now #22 post-panda. I looked at the top ten sites and could honestly say 4 of the top 10 ranking pages were better.
I beefed up the page something outrageous. The content blows everybody out of the water, seriously. 20 human reviewers looked at my page and the other top 20 pages and clearer, unanimously say it is superior in all facets. But, it still only ranks #19.
I guess as @RustyBrick points out, you have to improve all indexed pages before you can gain any head way at all.