But, given that Who is now being released on Blu-Ray (all be it slowly), as there is a helluva lot more space on those discs, maybe they can squeeze on the full confidentials as the space available. Maybe not the rights, but still, its worth a shot.
I agree. My comments above re: there not being enough space does apply to the DVD versions. However I think the question needs to be asked first as to whether BBC Video has any intention of upconverting the first 4 seasons. They are doing it to The Next Doctor (we'll find out tomorrow how well it worked out when it hits stores in the UK), so it's not impossible. But BBC Video and 2 Entertain have made some rather puzzling "because it won't make enough money"-type statements about no-brainer topics in the past, like animating lost episodes and the like. So they could decide to not bother upconverting the first 4 seasons, especially if they follow through with calling Matt Smith's first season "Season 1" which suggest they might move their attentions away from the Eccleston/Tennant eras altogether.
That said, according to the TARDIS Index File Wikia site, citing an interview with the head of the DVD range, there may in fact be animated reconstructions of a few episodes like Tenth Planet Part 4 on the way, so if BBC Video is changing its mind about something like that, then maybe they could decide to upconvert Seasons 1-4 and, perhaps, revisit the Confidentials question.
I do know that some of the "Cutdowns" have removed a lot more than just the pop songs and interviews with Sylvester McCoy and Colin Baker. I saw the original version of the "Blink" edition of Confidential and I was quite upset that the Cutdown version on my DVD didn't include most of the interview footage with the episode's guest stars, in particular Carey Mulligan.
Also, if they do put out Blu-Rays of the earlier seasons, surely there'll be room on the Series 2 discs to squeeze in the TARDISodes, too. In particular the one made for School Reunion which actually explained why the Doctor and Rose came to be at the school in the first place.
Alex