My thoughts on the matter
GLaDOS = Caroline uploaded in to a computer, you kinda see GLaDOS realise that in portal 2 and she only says that she deleted Caroline to save face in front of chell and still appear badass.
Its why GLaDOS replies to what cave is saying, saying the same thing...
the last thing we need is more consoles, just split up gaming even more... wow what a good idea.
i see no reason for a valve console from a gamer prospective, but i can see why valve would do it i mean idiots will buy anything if there is enough hype.
I agree with this that episode 3 is probably "out of the window" as it has been so long, I also think that the ending to EP2 was the perfect place to leave half life 2 as it was an amazing cliff hanger with them now in-rout to an aperture science vessel (the borealis) kind of supports the idea...
its the setting for HL3 ep3 or some kind of portal half life merger in witch they have to secure the powerful portal technology that the borealis used to teleport its self (and some of the dry dock) out of aperture laps 1970 condemned testing area to god knows where, no doubt they can use this...