Here is my opinion.
-X11 should ship with the OS preinstalled
Sounds good, but I go with the idea of make it simple and let the advanced people make it hard.
-A single user mode, that assumes that you are the root and admin user so you don't have to always enter passwords
Already there, hold Command-S when you boot
-More professional grade apps
Ummm. Well I think this request should be on the "Linux" side of things. Apple has the support of all the big App makers, Adobe, MS, Macromedia, etc.
-More system apps like terminal
I don't understand this one, there are a lot of apps for system stuff other than the terminal, Directory Access, Process Viewer, CPU Monitor, ODBC Manager, NetInfo, and Network Utility
-Runs '.exe' programs (i wish)
Umm no, these are called viruses, and would most likely violate US copywrite laws.
I would like to have a package or something that installs all libraries that are on most Linux systems, OSX doesn't even come with Glib, and that stops most linux apps from compiling.