Your comments

Cmd+Shift+Z has always been bound to redo by default
Please check the documentation (under 'OS X Command Line') to see how to do this, at
You can use the use_simple_full_screen global setting for this
The Find All button on the find panel does this
I am unable to replicate this. Please ensure that in the status bar it reads "Tab Size: x" and not "Spaces: x".
This is not the typical behavior. Do you have any plugins installed?
Distraction Free mode does this
Find in selection is only the default if multiple lines are selected when opening the find panel.
There is already a visual indicator of sorts: a blank entry in the gutter, instead of a line number
You can already pass data to plugins from the command line by using the --command argument.