Because, as it stands, the only real advantage we see here is the ability to play an assassin with infravision. Since there's no multi-classing in my Holmesian vision (leaving out the special case of elves), there's nothing else you get with this species of semi-human that you can't get from, say, playing a half-elf...and the half-elf doesn't carry the same reaction penalty as the half-orc. That's not much of an incentive, especially as my version of an assassin is one that relies, in part, on its ability to get close to a target...something a good reaction roll could definitely help with.
SO...the half-orc needs another bone, in my opinion. Here's what I'm thinking: half-orcs receive a +1 bonus to reaction rolls (no penalty) when interacting with monstrous (non-player) humanoids of an "evil" persuasion: orcs, goblins, trolls, bugbears, etc.
This could make any half-orc PC (of any class) a bit more interesting to play, as well as opening a door that encourages social interaction, and it also increases the possibility of a motley crew of strange henchmen and followers (though the half-orcs' low CHA score would still limit the number of followers in their war bands). What do you think...too much? I definitely prefer something like this to giving them some orc-specific exotic weapon specialty.
|"Let's discuss this like civilized folk."|