You're right Thrik, you'd've thought they'd've (good old english abbreviations eh?) stepped it up a notch to bring Source into the new generation of editors. They just seem stuck in the past.
But don't get me wrong, I love Source. I worked on Black Mesa for a year or so and made some decent stuff with it, but damn, I've meddled with the UDK since and it seems so much more advanced. Source just seems so archaic now, they really need to make something new.
It's sorta like trying to make an ugly woman beautiful through plastic surgery... No matter how 'pretty' she looks now, underneath she's an ugly motha******. Source just needs to be put down gently and laid to rest. RIP!