Wrath of the Lich King: 10 v 25 Instances

Bornakk just answered a few questions about the new raid set up in WotLK. Here are the interesting parts:

Blizzard wrote:

Why should the 25 man raids, which are no more difficult, except in
terms of logistics, be rewarded BETTER QUALITY of gear as opposed to
GREATER QUANTITY of gear?

The 25 person raid dungeons are likely to have more difficult
encounters, on top of the logistical aspect, because with more players
available there will be more things going on that they will have to
adapt to.

I'm curious though, since both 10 person and 25 person dungeons will
have their own progression lines, why do people doing only 10 person
dungeons need to have their loot match the 25 person dungeons? The goal
is to have the items dropped from the 10 person versions be fully
sufficient to gear up and allow a group to continue progressing without
forcing you into the 25 person version (and vice versa).

Why should the 10 mans only become available AFTER the instance has been done on the 25 man level?

We haven't made a final decision on how one will affect the other. Stay tuned for more details in the future.

The Current Gearing system is so broken its not even funny and you guys
better shape the hell up and fix it for this new expansion.

We added a lot of item related things like the Arena and Badges of
Justice in The Burning Crusade. After seeing how these things worked
out we have a much better grasp on these things and we feel they will
work out smoother when we have more solid plans involving them from the
very launch of Wrath of the Lich King.