StarCraft II Heaven

1. Does the Zergling vs. Zealot ratio remain at 4:1 or has it changed in the latest builds?
One zealot can usually take out two, and sometimes three zerglings. However, the ratio is mainly based on positioning and micro-controlling. As the number of zealots grows, it will take more zerglings to win the fight since the zealots can clump up and reduce the attacking surface area. Smart use of terrain, such as a choke or backing up against a wall, will also help a protoss player reduce this attack area. Zerglings have to secure a good surround around the zealots to keep the ratio close.

2. In World of Warcraft pvp they found an issue over time that it was "very unsatisfying" to the player when they lost control of their character as it limited their ability to do their job or role. There is a noticeable increase in stuns and immobilization in Starcraft 2, which was barely present in Starcraft 1. From your experience in testing, do you feel abilities, which limit unit control, provide more dynamic game play so far or are you noticing more concern?
First of all, there were actually some abilities in the original StarCraft that could cause players to lose control of units. These abilities include the ghost's lockdown, the corsair's disruption web, and the dark archon's mind control. It may be premature to suggest at this point that there's a "noticeable increase" in stuns and immobilization in StarCraft II.
To address the comparison anyway, in World of Warcraft, you control a single character, unlike RTS games where you manage multiple units and bases. The difference in the World of Warcraft is when you lose control of your character you simply have to wait it out, assuming you don't have any control breaks. However in StarCraft, when units in your army are being controlled, you can still issue orders to the rest of your army, manage your base, build new units, etc. There are a lot of options and we happy with the diversity it brings to gameplay at this point.

3. What is the current status of the Mothership? What niche does it fill at this time, and if the unit were removed, would there be a reason to fill that niche with a different unit or would protoss still be fine?
Currently the mothership has a passive cloaking field for nearby units and buildings, wormhole transit, temporal rift, and vortex as its abilities. We are happy with the state of the mothership at this time, and would like to hear feedback from the players once beta starts.

4. What is your overall goal for the Infestor? The units have had and removed so many abilities, are you trying to focus into a support role, or disruption and harassment, or just to have a wide variety of spells so it can be a quick response unit?
It is intended to play more of the disruption/harassment role. They are meant to burrow and move up ahead of the swarm to soften up their opponent's forces.

5. Is EMP dodgeable, or there's some sort of indication that it's going to be launched? And does this cause a problem with Immortals?
It's possible to dodge EMP, but it is difficult to do. Your options include anticipating your opponent will be casting an EMP by seeing the ghost or its shimmer and predicting it; being near the edge of the EMP range and moving out quickly; or using the stalker's blink ability.

6. Map/mod to site communication – Will there be support for map/mod makers to bridge a connection between their map/mod to their site? For example, if a person wanted their map/mod to submit scores/results to the site, and vice-versa the map/mod could pull the highest scores from the site and display it in the game.
It is possible for players to make their own custom score screens but there are no specific plans to bridge map data to web sites via Battle.net.

7. Launcher support – Will maps/mods be able to have their own "launcher" (ala WoW's launcher), as in shortcut or start icon from the computer outside of StarCraft, and have their own screens, after a Battle.net authenticating screen (ala Twitter's, or Facebook's, application authentication).
There are no plans to allow maps and mods to have their own launcher. However, making a loading screen or launch screen is still possible.