>I created a macro and assigned it CTRL-Z. Then I decide to do another one to replace it and it tells me that the key assignment for is already being used and I should assign another one, but with no option other than OK. I am not given the option to overwrite the existing one. Nice. I always use CTRL-Z in Word for temporary macros and they just keep overwriting.

You are aware, of course, that Ctrl+z is the standard key for Undo in pretty much all the software that has it.

As for the consistency between Word, Excel, Lookout and Pointpower ... read some history. They were all initially written by separate teams, and were, IIRC, first written for Macs. After so many years, what's your bet: how many times were they washed vs written from scratch?