Stuart,
What makes you think that call transfer is in the development pipeline? Also, how would call transfer work? It seems unlikely to me since an incoming call is necessarily encrypted, so a transfer to another "line" would require either transferring the keys or establishing new keys without losing the connection. Both seem very unlikely. I just don't see how it's possible without changing Skype's entire security framework.
Now if you're talking about terminating Skype calls at a PBX box, that would allow transferring calls.... but we have that already, don't we.

Oh never mind..... I see that the "skype attendant" acts as the administrator of a conference call.... so the keys to the call are actually established between the caller and the transferor and remain in effect after the call is transferred. It should be noted perhaps that the "skype attendant" has the ability to listen in on any subsequently transferrred call. Ouch!.... but maybe that's acceptable or even desireable in a corporate IT context.

You are absolutely right, we have been using IVR techniques inside our product WiSPA (wispa.it) for six months or more and have a whole range of features sitting on the development shelf waiting for Call Transfer functionality inside Skype.

I suggest that this one feature will move the Skype ecosystem forward by one huge step.

Hey that was really cool.I can see lots and lots of use for this. It worked like a charm if you can understand my voice you are doing OK, loved it..

Skype is touching the sky with new dimention getting added rapidly. Can Skype have a Skype-Medico which can:

1. Provide online medical support to remote users
2. Provide telemedicine support
3. Provide location based telemedicine depending on local regulatory framework
4. Provide emergency services
5. Provide medical records for consultants for patients using data mining