Slow doesn't mean a thing! Lots of the songs on Get Lucky could be called slow, but they are beautiful. For example "So Far From the Clyde" is relatively slow, but I don't remember many complaining about its slowness. "Before Gas & TV" is slow, but it also happens to be one of my favourite songs.
I still have a very good feeling about Tracker. Why waste energy moaning before it's been heard and thoroughly digested!