With the changing landscape, here's where I would want to go.
ATL gets AD, while still staying below the tax line now, and with no tax issue ahead either.
The meat of the deal for DAL would be AD for Risacher/NO #1/future protected #1.
I'm not sure of the totals re tax for ATL so there may need to be some tweaking, but this either fits all that or comes very close. In any event, it is definitely CBA-legal.
DAL sends AD, Hardy, DAR (perhaps expiring), Exum (expiring)
ATL sends KP (expiring), Wallace (expiring), Risacher, Kispert, NO #1, another FRP in a coming year (which can have protections, so long as it is always a FRP being sent eventually).
EDITED TO ADD - This may not work after all. ATL may have a lot less room under the tax line, which would limit the trade possibilities considerably. More notes in later post.
ATL gets AD, while still staying below the tax line now, and with no tax issue ahead either.
The meat of the deal for DAL would be AD for Risacher/NO #1/future protected #1.
I'm not sure of the totals re tax for ATL so there may need to be some tweaking, but this either fits all that or comes very close. In any event, it is definitely CBA-legal.
DAL sends AD, Hardy, DAR (perhaps expiring), Exum (expiring)
ATL sends KP (expiring), Wallace (expiring), Risacher, Kispert, NO #1, another FRP in a coming year (which can have protections, so long as it is always a FRP being sent eventually).
EDITED TO ADD - This may not work after all. ATL may have a lot less room under the tax line, which would limit the trade possibilities considerably. More notes in later post.

