Well, since the new version of the map will be released soon, this and some other suggestion I'm going to make are all for the next versions of the map.
This one is for the Far Sight - Spell.
I think this skill would be really helpful on the game. It would be mostly usefull to check bosses, who some times just circle around the base, without having to blink any unit there.
It's also helpful to check areas on the fog within the map.
And for last, it also reveal invisible units.
I know it's something small, but since this should be something easy to implement, I think the map would gain a good feature, without much work needed.
Also suggest that, if the idea gets accepted, the spell should be placed on the Sentry post tower. And the ability could be trained on one of the tabs on the Command Center. Could be a Team upgrade, or just a normal one under the Others tab.
It would give sight of a designate are for 10 seconds( the spell would be global )
Example:
