It could be useful for the player to know the sight range even though it is realized by the unit itself. It could be added in the unit information panel.
Ah…it’s not necessary. I don’t know the move-speed of my stalkers but I know their move-speed is fast. Faster than roaches that don’t get upgraded and marines.
Let Blizzard focus on other useful thing.
And if you don’t know how many stalkers you should leave them near your base for defend.
Watch more walkthrough video, you will find it.
In different situations, the numbers of stalkers is different.
I just want to tell you the importance of walkthrough videos.