yes you can attach it to other attachment points, however they won't turn up in the same spots like on the bloodmage... for example if you attach it to the overhead then the unit will have a burning sphere sitting on top of its head. The sprite attachment points move around, and that is why on the bloodmage they swirl around him. You would need to get a custom attachment done or model edits to get the bloodmage effect on another unit.
I do know this - xenforo dropped the ball by not keeping the vbulletin reputation comments as a feature. The loss of the Reputation comments data when we switched to Xenforo really was the death knell for the site when it came to all the users that left. I know I missed it so much and I got way less interested in the site when that feature was gone and I run the site.