I hear nothing but good things about Bloomberg. The only problem I can think of about having someone like him in office is that, on a national-level, there are more political/moral/religious issues (e.g. abortion, prayer in schools, etc.) that I'm not sure a politician like Bloomberg would be the be best to handle.* That said, I think he would be awesome at handling things like healthcare, the budget, financial reform, etc. even if I didn't align with his views on some things.
*Now that I think about it, he might be OK in a particular sense on these issues, as he might just stay neutral and not try to get involved in those issues.
yea its hard to tell how he'd handle himself in the heat of a national campaign. NYC is safely left-of-center, we dont get hit in our local politics with the polarizing national-level stuff. That said, the few times Bloomberg has expressed opinions on national-level issues, he's been fairly diplomatic so far.
I remember watching a speech he gave in virginia to some business group, it was televised on c-span. His topic was gun control and how NYC deals with it (and how he'd like to see the nation deal with it) in terms of finding a balance between the rights of hunters and individuals vs the common sense controls and limits local governments need to make. (Even free speech isnt totally free, cant yell fire in a theatre and etc, cant do libel, the freedom comes with checks and balances and responsibilities).
He was facing a mostly southern pro-gun crowd, and I thought he handled himself really really well during the Q & A period. What I remember most was that he had a real sense of humor which defused the polarizers. And his point was always how to find a balance between individual freedom and social responsiblity -- he's a genuine political moderate, in that sense.