But don't you prefer a gaming system where there is a reasonable balance in place rather than having to house rule to create a level playing field?
Two things:
1.) I don't consider the Nagazi hide to be unreasonably unbalancing, for the reasons I mentioned in my last post.
2.) Even though I don't think the Nagazi hide itself is overly unbalancing, I'm not particularly concerned with balance. One of my favorite games is D6 Star Wars. No matter how you slice it, Characters that are Barabels, Wookiees, or other big strong species are going to far outpace human or various other "normal" alien characters when it comes to combat. But just because they have the advantage on paper, doesn't necessarily mean that their characters are going to dominate the game, and the less combat savvy characters are going to appreciate having a bruiser who can cover them while they are trying to say, hack a door lock or something.
I don't want characters to necessarily be balanced in all the same areas at all times. I like a mix of character types that usually have one or two areas that they excel at, and what they're not so good at, other characters are. As I develop the story, it's generally going to happen that each character is going to get their big hero moment, but that doesn't necessarily have to do with combat. I just got back a few hours ago from running my session, and there wasn't a single combat round tonight, it was all about diplomacy and investigation (using the "M is for Murder" seed in the Cyradon book). Lots of Perception checks, lots of use of the Influence and Subterfuge skill groups, and everyone had a great time. If we had a Nagazi character (although I did get to introduce my NPC Nagazi), his Tough Hide wouldn't have been any kind of advantage at all. Nor was the +5 to DB
AND OB that the dwarves and Gryx get from Dense Musculature. The +25 for Stalking and Hiding that the part gnome ranger gets from her Natural Camouflage was a factor, however, but since it helped her follow people and gather intel, no one complained.
The Nagazi in the city (in my game, at any rate) are primarily merchants and tradesmen anyway, they're there to make some money off the refugees if possible. If they're going to get into heavy combat, which they're not really interested in, it's most likely going to be while defending themselves against Nagah or Nagaral, in which case the Hide means nothing, since the other guys have it too.
For me, it's not about unbalancing combat advantages, because if I'm concerned with balance at all, it's the balance my players experience in their fun. I seem to be doing fine with that. I get some enjoyment out of the simulation aspect, myself, which is why I don't enforce any maneuver penalties on the Nagazi for their hide, nor would I for any species with that talent, as it just doesn't make sense to me. I understand why leather armor has those penalties, because that's tanned and hardened and worn like clothes, and if it's going to be effective, it should be a bit stiff, limiting mobility a little. When it's skin ON a living thing, it's a lot more flexible and supple. To give a morbid example, if I ran around naked, (which no one wants to see) I'd expect to be at my most unrestrained, movement wise, with nothing in the way. If someone skinned me and made a suit of armor out of my flesh, I'd expect their movements to be restrained a lot more. So, yeah, no penalties for Tough Hide. If I did enforce it for the sake of "balance", the illogicality of it would annoy me, which takes away from my fun, so the penalty is gone.