A lot of the operational cost savings they're pushing us to do....we can't! Why? Lack of communication with other departments or vendors. Why bother with single engine taxi in with no APU when you're just going to have to start the APU anyway because DTW takes 10 minutes to plug in ground power? Surely we just burned more $$$ in gas than we would have saved starting the APU on the taxi in (plus more time on the engine which is their main argument for reducing APU usage: time on the APU). First step is to get the other stations on board with the plan, then implement it. Instead, we get memos saying "This is how it's done now" and they rely on the FOs doing the walkaround to explain what's up to the ground crew. I noticed we FINALLY got GPUs at most spots in JFK, but I've never seen them turned on. In fact, I had a deferred APU there last month, and they went through 5 GPUs before they found one that worked. The XJ -900 next to us also had a deferred GPU. They just wound up hot refueling because it was quicker. Or maybe that's just how it worked out....