There is no reason to believe that anything else will be added. Could it happen? I suppose so, but don't hold your breath.
The only reason this trade wasn't announced just like all the others is because Battier is a BYC (base year compensation) player, which makes him extremely hard to trade for certain reasons. However, after July 12th, he is no longer a BYC player, his restrictions are lifted, and the Gay/Swift for Battier trade gets a green light. It's really that simple. But...
Given the outside chance that the Rockets demand more from the trade, I would actually be extremely HAPPY with the following:
Memphis gets a solid veteran in Juwan, a potential star in Gay (who they obviously are very high on), and well, Swift is Swift. Houston gets a very solid player in Battier who can start at SF (if Tracy is willing to slide to SG) and Mike Miller can be the 6th man, which is a role he excels at. We could then target a PF (big enough to play C if needed...perhaps Wilcox?) with the MLE, re-sign Bogans for cheap and we're looking much better. Just maybe need to get another PG and SG somehow...maybe a trade exception (very unlikely) or a sign an undrafted player for the minimum (which you can always do, even when over the cap).
Alston / Head / (minimum salary player...Darius Washington?)
McGrady / Bogans / (minimum salary player...Mike Gansey?)
Battier / Miller / Bowen
Wilcox / Hayes / Novak
Yao / Mutombo
I could live with that...
But as this trade stands, we got taken to the cleaners.