David, I don't think they could create a version of IntelliSense that satisfies everyone. Personally I like the new version better for this reason: when I am looking for a DMV involving, say, transactions, I don't have to know whether it starts with dm_db_ or dm_tran_ or dm_os_ or what have you. I san type:
And the auto-complete list is populated with items that *contain* "tran" - unlike in 2008, where I would already have eliminated the list to objects that *start* with "tran." For me that's a big win and, since I found IntelliSense hardly usable at all in 2008 (in fact I almost always turned it off completely), I'm still way ahead in terms of productivity, extra keystroke or not.
Like many things, YMMV.