I find the MacBook precision remains just as good at higher pointer acceleration settings. In addition the same precision is normally present with all the various gestures with no loss of precision using multitouch inputs. Did you adjust any of the MacBooks you used to better fit your preferences? The slow default is the first setting I adjust because I agree the default pointer acceleration is far to slow for my tastes.
But I wanted to point out that this is a spot to be careful about decisions. The natural choice is to pick a default that you like yourself, but that's probably a choice that would ultimately hinder adoption of Linux as a desktop OS.
Geeks like a faster setting, but geeks also universally know that this sort of thing can be customized, and can easily figure out how to change it. Non-geeks are more likely to find a fast setting to be frustrating or unusable, and are also less likely to know that they have an option to slow it down.
