I would have to say that whoever thought of this great idea to have ALL of the rental car companies in the same building under the same roof: YOU definitely had your thinking cap on!
Having all the rental companies in the same place is definitely helpful to the throngs of travelers, tourists, and gamblers, that make their trek to the gambling mecca that is Las Vegas. There are multiple shuttles that make trips to nearby McCarran Airport for the convenience of travelers.
On this recent trip, we found there were 2 shuttles waiting for passengers near the arrivals area for Terminal 2. The driver was very friendly and outgoing, did a great job of handling everyone's luggage, and made sure everyone was seated comfortably before leaving the airport. He also maximized the shuttle's capacity for passngers!
The rent-a-car center is big, grand, and new. All rental car companies are well represented at their respected counters, and there is ample seating and a snack bar or machines available for the weary traveler.
Bottom Line: A well thought out necessity for the Las Vegas traveler.