[Clockwork]

Not sure how one is supposed to use the Replicant... 200/200 and 4 supply to replicate any currently visible unit, but it's supposed to be a mid game map control unit? Sounds too expensive to be viable, though the fact that it gets all of a unit's upgrades (whether they're researched or not) is a bonus. Someone is going to have to explain its uses to me. The Tempest, Oracle and new Nexus abilities are sweet.

On the Zerg side, Vipers, Swarm Hosts and Ultralisk burrow charge are all good things. Not sure how I feel about Baneling burrow move.

I don't know about the Shredder yet either, it'd be good to use but I don't see why Terran need more map control options.