Stargate is the only production facility that shows what unit is being built. I see no real point to this. If someone could enlighten me that'd be swell, but my current take on it is that it should be fixed so that the Stargate can be like other production facilities and now show what it's building.
Also, it does actually matter. If someone scouts your stargate, they don't even have to worry about the possibilities of what's being built, but rather can see it right away.
It's not a horribly huge balance for feature fix, but I think it'd be a decent change to make.
I'll be posting a link to reddit as well, and will provide a link if you'd rather discuss there.