You can't have your uniform pants tailored to fit better?

Worst: SkyWest
Best: Everyone else.

Not familiar with them. What's so bad about them?

And for the record, most suits can look good if tailored correctly. The nicest suit in the world will look like crap on you if it doesn't fit right.

Black tennis shoes, or dress shoes that aren't one color (think racing stripes). A black backpack hanging off the roll-aboard doesn't look terrible but I've seen a few colorful backpacks worn over the blazer this winter. Looks ridiculous.
Read above.

1. Yes, you can tailor your uniforms to fit better.
2. At the regionals, they pretty much wear three different uniforms:
- SkyWest, Endeavor, Expressjet and Compass essentially have the same uniforms, black with gold stripes. I think Horizon wears the same thing but with the Alaska tie. There are a couple variations such as what combinations of sweaters, leather jackets, jackets are allowed etc. Three out of four in this group have name tags, and 1 in 4 requires the hat all the time.
- Piedmont, Envoy, and PSA wear the American uniform which is a dark grey with silver stripes
-Blue with silver stripes which is what GoJet, TSA, Republic, Mesa, and I believe Commutair wear.
- Black with silver stripes which is what Air Wisconsin wears

3. In general, the uniforms come from one of 3 or 4 main vendors, and there isn't a lot of variation. For the most part, they look the same and nobody really cares. You wear what your boss tells you to wear. And nobody is wearing double breasted blazers except for Delta and most people feel that it makes you look like you are in the Navy.

Honestly if you took the epaulettes off a Skywest uniform you could be mistaken for a missionary. Not good.

You can't tailor pant leg diameter.

*Edit-apparently I'm wrong.

Actually, you can.

Wait, what? News to me! Have you had this done? Just curious how it turns out?

Best: Chicago Express. Most likely before your time.