Let me preface what I'm about to write here with the knowledge that I am really just asking a question here; I want to know what you think. No smarmy judgement, just curious, and I think this could be interesting conversation:
What do you expect from a new console? Do you think that all consoles should be backward compatible with previous iterations from the same company? Do you really think it's worth it to do so?
I know we're all here on a nostalgia-fueled board, but really? Speaking for myself, is it really so bad that newer systems are not directly backward compatible (especially with the influx of digital distribution methods like Nintendo's Virtual Console?) I have a PS1,2, and now 3. On the rare occasion that I get the urge to bust out a PS2 or PS1 game, I just bust out the system it was intended to play on...
Okay, so what if you don't have one of those older systems, such as Kangum? Part of me wants to say; obviously you haven't missed it too much.

Then again, what's to stop you from getting an older system if you want to play those games? It's not like the systems have magically disappeared (with perhaps the exception of the Dreamcast GD-Rom drive...) and one look in the GameCrazy/Stop "Used Games" bins will net you any number of great games. That generation of gaming can be done very much "on the cheap" now.
A smaller arguement here is; why would you bother? Particularly with the PlayStation, most games (GENERALLY, save some of the really outstanding rare games like Shadow of the Colossus, and the RPGs) have had updates/improvements released on PS3. Why would I want to play Tekken 4 or 5, when I can play T5:Dark Resurrection on PS3... in 720p... AND only pay $20 for the game?
I might even make the arguement that removing BC from the PS3 is a good thing precisely BECAUSE it limits the number of possible SKUs! Without the confusing BC features or lack thereof, SKUs become solely about hard drive size and occasional combo packaging (which are both easily navigated and changed, if need be.)
Would anyone be concerned about this if BC had never been a feature... or was not a launch feature, but was added via software at a later date?
Anyway, I'm sure there are holes to my arguement here... Just some thoughts...
edited for spelling errors