Yes and no. The downside is that there's a limit to the number of type ratings your pilots can have. Then there's the operational nightmares that come with ha

Yes and no. The downside is that there's a limit to the number of type ratings your pilots can have. Then there's the operational nightmares that come with having to support all kinds of different airframes. Southwest only flies 737s. In fact, they were so fussy about aircraft that Boeing had to _make_ them take an autopilot on the 737-700s that they bought.