I would like to sugest a very minor buff or a mechanic change for the zerg.
As you all know zerg units regenerate over time. It's a very slow regeneration of no more than 1hp per second. And whilst this is suficient for their low hp units, it makes almost no difference for buildings which have hundreds of hp, since the regeneration is so slow.
Whilst both the terran and the protoss have means of repairing/recharging their buildings, the zerg are handicaped by this slow regeneration. And another thing worth mentioning is that both the protoss and the terran can upgrade the armor of their buildings, while the zerg cannot.
So i would like to suggest an increased regeneration for units, that are burrowed on creep. Instead of the normal 1hp regeneration, all units that would be burrowed on creep terrain would have an increased health regeneration of 3hp per second instead of the normal 1hp.
And another thing of importance, all zerg buildings except the extractor would also have this increased regeneration, since they would theoreticaly count as burroved on creep.
So basicly this suggestion would bring an increased hp regeneration of all buildings, and an increased one for units burroved on creep.
Lorevise, i think this would make perfect sense, more than a speed increase
And as i mentioned, i think this buff is supported by the fact, that the zerg are handicaped in this, compared to the other two races.
Any thoughts?