I was reading over the patch notes and noticed that CCP is finally getting around to fixing the Sleepers ability to energy drain.
I have not had a chance to test this out yet, so it is unknown how much this will affect ship's ability to tank. Most sleepers carry NOS so as long as it works like NOS does for players (ie, no energy drain when the target ship has less cap then the NOS ship) I don't see it as a problem. However, I do believe some Sleeper ships have Neuts as well.
What does this mean?
Well, it could be nothing. NOS isn't really a killer unless you flirt too low with the 33% max recharge. Neuts could really ruin your day. It may become unable to solo C3 content now with this change due to the extra stress on the capacitor.
Let me know what your seeing out there.