TV Replay is a pay service for a reason...
The opening comment isn't really much to do with the Sky Sports stuff but if one person moans... another will argue that they are wrong.
Pretty obvious why iPlayer isn't on BTV.
Vision has to pay its way. Letting spongers use the current infrastructure for gratis isn't good business sense and it's well known that UK ISPs are struggling to keep up with VOD. Imagine giving full iPlayer access to the ~450k subscribers overnight. Appart from hitting revenue it'll break some parts of the BT network.
As it stands (as a subscriber) - I think TV Replay is well worth the money. There's no worries about picture quality and whether or not it's going to cut out half way through for buffering.
The much talked about Project Canvas will deliver the free stuff that the "Sod That" poster wants. It is supposed to use a different distribution method making it easier on ISPs to deliver cost effective VOD. Till then - paying for BBC/ITV Player/4OD, Demand 5 on BT Vision - well worth it and the basic package is good value.
With Sky Sports added - fingers crossed BT will sell it at a good price and have some cut price offers.