Isiah Thomas does have some teamates who are good defensively. Not sure what that has to do with individual defensive ability though.
Anyway, I'm still waiting for any of the IT fans here to admit they'd trade any of our players for him. I've already stated there are at least 3 Jazz players I wouldn't trade straight up, and several others I probably wouldn't trade for him. The all star label is completely misleading in some cases, and this is a prime example IMO.
Why would you ask a bunch of Jazz homers on a Jazz board who they would trade for Thomas? Fair price on this board would probably be Withey for Thomas + pick