so what i ask is if your investigate score is high enough that you can examine and see those same information on other characters (unless they are disguised wich would require break that first)Tiers of information are races involved, kind of damage dealt as killing blow, character class - if any is applicable.
incase of weapons, i say it only affect medium and large weapon, (or small and medium for small character) and should be all the weapons they used to deal damage with from last reset. as those weapons should be hard to hide on your body.
you should only be able to get this information at a close range.
example with high investigate score:
Race: Sun Elf
Weapons: One blunt weapon
Class: Warrior.
or with low investigate
Race: uncertain
Weapons: uncertain
Class: uncertain