I wondered this also, I thought at first that all the screen shots were of the same mech... although an inordinate amount of them do seem to be the Atlas but that's beside the point.
I would think that having the damage indicator be specific to the mech you are piloting would be beneficial to the pilot as it would serve to remind you exactly what mech you are in and help with immersion into the game.
It may not be a problem NOW ( yeah you can tell the difference betwee being in a Hunchback and a Jenner while piloting it) but later on down the road as they add more "Mechs that have only slight variations in how they move but vastly different looking chassis...
I for one would probably like to have two mechs of similar manuverability ( a Mosqutio and a Jenner perhaps?) but with different loadouts for different purposes. The damage indicator would act as I said and be a reminder exactly which mech I am in so I know what role I should be in the battle according to the loadout I provide each chassis.
But hey... that's just me.
Also of note if we want to bring up immersion: Wouldn't a "Mech Pilot have 'his baby' that he uses most often... I mean he bought it he probably uses that particular chasis for most of his career. These aren't (nesecarily) troops that use whatever chassis they are commanded to use, but pilots that would probably have their favorite. I would think that they'd have diagnostic screens that better represent "their baby"...
Edited by Baked, 30 August 2012 - 11:56 AM.