The airport is okay overall. This review is for Terminal 3: the newest terminal. I travel with a disabled child, so my opinions may be different compared to those more able-bodied.
When flying out of Terminal 3, things are super easy. Well signed, quick security, and short walks to every gate.
When flying into the terminal things are a little tricky. Finding an elevator to baggage claim is difficult. Escalators are abundant, but it took quite a while to find the elevator. Once we found it, we were able to get to baggage claim without any more trouble.
Finding passenger pick-up is very difficult as well. It's obvious the airport is trying to cater to transportation companies and not locals who have a ride waiting for them. Ground transportation signage is very abundant and easy to read. The ground transportation area is just steps away from the baggage carousels for easy access. For those meeting their ride it is another adventure. There a very few signs pointing you to passenger pick-up. Once you see the signs, you have to make you way through a maze using elevators/escalators and then crossing a long sky bridge.
Terminal 3 is a nice looking facility and very efficient when departing Las Vegas. It is the exact opposite when flying into LV.