well, the robots have "camer eyes", the tyrannos even has a monocle... but their head movement, and especially the torso movement would make a first-person-view not very playable.

ontop of that - the robots first persion view has nothing in common with the LoS of the weapons...
a little figure:

*     <- here is the starting point of your weapon LoS
  <- heres your robots head

example for seth:

*    <- here is the starting point of your weapon LoS
O <- heres your robots head
^ there is your robots body

example for missile bot:

    * <- here is the starting point of your weapons Los
<- heres your robots head