Vote for the new game mechanics

The StarCraft 2 team has made a number of changes in each of the races and the new game mechanics are expected to provide players with more strategic options and chances.
Here are the new game mechanics for gathering resources and building up army.
And you can check more changes in each races at the latest StarCraft II Q&A - Batch 49(StarCraft II Q&A - Batch 49 http://forums.battle.net/thread.html?topicId=15211803043&sid=3000) as well.
So, what do you think of this new game mechanics change?

Protoss Dark Pylon:
• Proton Charge: an area-of-effect ability that gives all targeted Probes additional charge for their Proton-Cutters. Probes that have an additional charge gather additional minerals per trip when collecting resources. The Proton Charge lasts only a short time before dissipating.

Terran Orbital Command:
• Calldown Mule: sends a single automated mining robot by drop-pod that assists SCVs in collecting resources by working around current SCV mining operations. Unfortunately the Mule is still in the prototype phase and has a limited battery supply (timed life).
• Calldown Extra Supplies: sends additional supplies to a targeted Supply Depot. Generally used by Terran commanders only in an emergency to allow them to support additional troops.

Zerg Queen:
• Spawn Larva: by injecting Queen ichor into a Hatchery, Lair or Hive the Queen can cause the Zerg structure to undergo a startling metamorphosis. The Hatchery starts to throb and green sacks swell up on the structure. Eventually four additional larva burst out of the Hatchery and land next to whatever larva are already wriggling around nearby. While a Hatchery hosts more than 3 larva, the Hatchery will not spawn additional larva, until that number drops below 3.