To not show players name: mp_hovertext
Either use "mp_hovertext 0" if you don't want to see anything when hovering over it, or "mp_hovertext 28" if you want to see items any other stuffs but not the health and names of the players.
Stealth Suit cannot get 100% invisible, not that I know of anyway, without using lua tricks.
@ DC: Thank you DC
Make 100% invisible is my hope
Because I want build a map that Terrorst is Ghost,I want let them when move is visible and when stop is invisible,
And CT must use they ear to judge where Terrorst is.
I want to take the liberty of a suggestion could join a function to edit Stealth suit's transparency next version so I can bulid more interesting map.