[PTSZ]

At the moment, terran have a few nice upgrades that although not absolutely essential in most games, give the race a nice edge. I'm talking about the ability to morph planetary fortresses and upgrades from the engineering bay - 1+ armor to terran structures, 1+ range to missile turrets and planetary fortresses, additional bunker capacity and a few other ups that just make everything that little bit more efficient.

Maybe in HotS they could give zerg some similar upgrades after Lair tech? Maybe -

Exoskeletal Regeneration : 4x life regeneration rate for zerg structures - This would help with static defense in mid-late game vs terran drops/protoss DT harass.

Lamellae Pressure Increase: 2+ range to spore crawlers - Also could help with terran drops/protoss air.

Morph Swarm Colony : Ability to morph un-upgraded hatchery to a defensive structure - loses the ability to spawn larvae, but gives the building an anti-air attack similar to spore crawler and for every 10 HP of damage taken, the structure releases 2 broodlings to defend ground. Structure has 800 HP. Would be nice to help secure those expansions.

Corrosive Spread - Creep Tumors : Upgrade gives creep tumors ability to slowly drain HP of surrounding enemy units within a radius of 5. 1 HP of damage every 5 seconds. When tumor dies, it deals splash damage similar to banelings. Player cannot manually detonate the tumors.

Of course terran and (especially) protoss will get upgrades to compliment their buildings as well. What you guys think?