The reason I'm basically summarizing these interviews and posting them in a new thread, is because discussion regarding these videos was instantly buried in the other thread, and there is some pretty amazing new info that I believe everyone should hear.
I'm just going to quickly summarize what happens in each video, but I highly recommend you watch these videos.
Especially the Chris Sigaty and David Kim interviews.
These interviews really give you a glimpse into why Blizzard made the changes they did in Heart of the Swarm, as well as their design standpoint.
Goes into detail about the reasoning behind no lan, as well as some features the new resume from replay feature has in store, as well as talks as to when to expect to see the HotS beta.
Apparently if I heard correctly, you can resume the game 10 seconds before a disconnect or crash, as well as allow the A.I to take control of the other player in the replay and imitate their actions.
This could allow you to have someone perform a rush, and then allow the A.I to play it out again from a replay so you can practice against defending the rush. Sounds very cool and exciting!
Obviously this will not be 1:1 as there is no way A.I can say micro like MKP, but this sounds like it has a lot of potential.
I guess Blizzard does have the technology after all
He also talks about how there are some things that are in Heart of the Swarm that we haven't seen yet, such as new variants of the Nydus Worm, and example being that there is a new Nydus Worm that spits out creep, thus allowing you to spread your creep across the map tactically.
Basically Dustin Browder discusess the new units, and what role he hopes they will fill for each respective race.
The Widow Mine in particular, the team is having issues balancing the unit in regards to the cost of it.
The unit is very powerful and pricing it accordingly is proving to be a difficult task.
They don't want it to be too expensive so terran players don't make them, however they don't want them to be too cheap either.
David Kim goes over the reasoning behind the design decisions for the new units for heart of the swarm. He also discusses how Terran is being changed, so they can sit back and macro a powerful army via Mech, like how Zerg and Protoss players currently are in WoL. David also discusses how Global Rank and ladder will play out in HotS
Talks about his role as art director for Blizzard, and how he looks forward to working on Legacy of the Void Expansion artwork. Basically he says there will be some new units in the campaign that we will see that were cut out from multiplayer, due to balancing issues and other reasons.
My favorite thing of all, is simply the resume from replay feature. That is going to be simply amazing, especially for progamers who want to refine and perfect the build orders and defense against cheese, rushes and large macro games.