On using Data Sucker, once you get the ice down to Atman's strength, does that mean that you stop running central servers? As I understand, a successful run would place a counter on DS, which would create an imbalance between Atman and the ice's strength.
Also,if the Corp protects a server multiple pieces of ice of different strength, that you just won't be able to use Atman to break those?
Erm, I think you need to re-read datasucker. The tokens that are acquired by running central servers are expended to temporarily lower the strength of the particular piece of ICE being currently encountered.
Or have a clone chip installed and draw too many cards so that you can put Atman in your heap. When you run, trash the clone chip to dig out the Atman and set it to the proper strength. This way you can force the corporation to choose between rezzing ICE, knowing that you can tailor Atman for it, or let you bypass the ICE unrezzed.