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Standard good practice for on-page SEO includes keeping page title length below the maximum that Google displays in the SERPs. But words in the title beyond that maximum can be indexed, even if they don't show in the SERPs for end users. For ranking purposes, is there any value in words beyond the character limit in page titles that are truncated in the SERPs?

I know PR isn't a top ranking factor anymore, so "PR sculpting" isn't something to focus on. But isn't it still true that having more links that you need on any given page is worse than having fewer, in terms of that page's authority? I'm managing a site that has a lot of navigational links in the footer, which are duplicative because they're almost all included in the top nav bar, and several are triplicated in the sidebar as well. I wanted to remove 85% of these duplicative links from the footer, thinking they diluted the page authority and that most users probably won't scroll there anyway when we launch the site. The site owner is pushing back, though, not wanting to remove so many links because he believes they might be useful to some users. We can test our respective user-behavior theories after launching, but right now I have two questions: Will having a sizable number of duplicative links in the footer dilute the page's authority? and 2) Are there any other ways to reduce this dilution, aside from simply removing the links? (I know nofollow is not the answer, but possibly using iframes or Java or something like that?)