I think we'd get him for fair NBA market value, which is lower than actual worth. If I'm ATL I don't want Bass coming back. I think it has to be a three team trade (since I'd guess we're sending out Bass, and I don't think ATL will want him.) I think AB and one of the picks, I'll just guess it'd be Melo cause ATL would have more interest in a C than a PF like Sully, go too.
I don't think Smith has to raise a stink. Just play bball and don't negotiate. That will not necessarily force ATLs hand, but encourage them to explore options. I'm guessing they want expiring in 2013 or 2014 deals, young guys with proven potential, and picks.
I think the Celts will have to think long and hard about doing this deal, but in the end I'd say they do it. Smith seems to have the athleticism to play small ball PF or traditional PF. If they can keep Green I think the 8 man falls into place.
q1 : yes. I'd guess they try to get an extension done before trading though.
q2 : pretty sure yes.
UPDATE: I think IF we get him, its for value described above. I'd still guess that's Less than 10% chance, as I haven't even heard anyone say the C's management is interested in him.