I find it disappointing that in the past region 4 releases often lacked the special features of their R1 releases.
The R4 Farscape sets were a particularly outstanding example of this. The extras were absolutely pathetic (and something as basic as subtitles weren't included). To top it off, each disc "features" the channel 9 logo before the menu - good ol' 9, the network that completely screwed the show in Australia.
(Why yes, I'm still disgusted about that. However did you guess?)
I've pretty much given up on TV box sets as released in Oz; now that our dollar and the US dollar are more or less even I find it's cheaper to buy from overseas - even with postage factored in. It's a pathetic situation that probably won't change any time soon.