Obvious Don't Allow:

* career
* map
* notarget
* edgefriction
* host_framerate
* sk_ cvars
* sv_ cvars
* changelevel
* changelevel2

Disputable (Should probably just straight up vote on these, too long to discuss them all):

* force_centerview
* alias
* wait
* weapon_
* cl_pitchdown
* cl_pitchup
* cl_pitchspeed
* clockwindow
* default_fov
* cl_showfps
* net_graph
* +graph
* developer
* fps_max
* fps_override
* r_drawentities
* r_drawviewmodel
* s_show
* skill (changing mid-run)