Been a little while since I updated. I haven't been driving super economically, but it's also somewhat dispiriting to struggle against the effects of winter.
I just ordered a new crank pulley, and am waiting on the belt to arrive. I'll be swapping the factory K24 pulley out for a Type R / K20Z1 pulley, which is 12% smaller, and will similarly underdrive my water pump, alternator, and A/C compressor by 12%. I'm thinking it should help get my parasitic losses down a bit.
Hopefully it will also be an upgrade in damping, since it's brand new, whereas the other pulley is ~2004-2008.
The mass is not much different between the two, but the smaller diameter should also give a smaller moment of inertia, helping the motor rev more quickly.