My first character is an Orc = certain frustration.

Playing a human assassin the first time out will be challenging enough. Stacking the cards against yourself ahead of time is, in my opinion, not a great idea.

I suspect that the lack of RP you're seeing is because Orcs have a history of being played for lulz. If you think you've gotten lumped in with the Retarded-Orc lot you can always have a bard pen a scroll to everyone in which you make it clear that you are a new breed of Orc and you demand to be taken seriously. Resultingly you'll probably get PKed twice as often, but you'll (hopefully) be more likely to get a reason from your attacker.

Also, keep in mind that there are some really wacky people who play this game and seem to have no concept that there are other people on the other side of the screen. Don't let a few bad (socially insensitive) apples ruin the game for you.