I've seen this question asked every now and then. So years ago I wanted to check if I missed something about football captains.

Check the link to the wiki -> https://en.wikipedia.org/wiki/Captai...tion_football)
Specifically the Responsibilities section.

I get what LeManiaque is saying but seems that in football a captain is mostly the voice and face of the team, and is the person who everyone basically relies upon to do... some, of the decision making and what not.

There is no specific point to the captain position in Top Eleven other than having it for the sake of realism.