Does Gene Ray Burn wrote:featured wrote:i'm sure there were people who said 'oh x can't do an impression of y, only z can do that' ...but eventually they are won over.
I think a good example of that is the Bob Dole impression. Aykroyd originated it in various guest performances over the years, a very accurate and humorous impression. Then came along Norm MacDonald's impression: less accurate, but over-the-top hilarious and forever ingrained into our psyche. Or how about Bill Clinton? Phil Hartman did a very good impression over the course of three seasons, with some very imaginative sketches ("Arkansas COPS" is a definite highlight of a stumbling season), but it was Darrell Hammond who turned it into his signature character, thanks to America's greatest sex scandal.
I think there's one thing that these two impressions have in common: one was president and the other was his party's nominee for president. If Palin runs a strong campaign through the primaries in two years, yes, I expect the impression to get passed on, and I would consider Slate a viable choice for taking over the impression. But as of now, Palin's only necessary for one-offs, and Tina's still in New York, and still working for Lorne.
I think a more relevant example would be Hillary Clinton, who Jan Hooks continued to portray following her departure from the show on the rare occassions she was needed. But a few years down the road, it was suddenly much more crucial to have a repertory member playing Clinton, and so it got passed to Ana and later Amy. Until Palin reaches that level of importance (and she's not there and I highly doubt she'll be successful enough in her presidential bid to do so), there's no impetus to pass the impression along and plenty of reasons it should stay with Tina.
Also, don't get me wrong, I'm all for passing Oprah to Nasim.