change of Unix default directory structure

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http://unix.stackexchange.com – Is it possible to change the default Unix/Linux directory structure? I mean by configuration and without need to change the kernel. Or if the kernel has to be edited, how hard is such task? Is the default directory structure (all these /usr, /bin, /etc directories) hard coded in the kernel? What I need is to have one root (/) directory, where every user will be free to create it's own files/directories and one /Linux directory, where all OS files will exists (probably in the original structure) including all configuration files. There should be no "Home" directory at all and all configuratio (HowTos)