I'm looking forward to seeing the changes that SWABrian is writing about.
With regard to the current southwest.com...
from my personal opinion...what's there to complain about? I can book a ticket in less than 60 seconds (I know where I'm going and what flights I want), and I can check my Rapid Rewards Balance quickly also.
Compared to the travesty that is United.com, I'll take the simplicity of the southwest.com site any day.