dane007 said:

They did say they will use the counc to vote thr new king every time. Which was similar to sams idea of democracy. 

Plus bran can see things in advance which no king can do. That alone can be advantegous to the westoros. He can see if people around him are telling the truth.  That alone is huge. No king could do that.

Ps hes on the wheelchair. Hes paralyzed below the waist so thats a dead giveaway he cant have kids hahah  

Because the history of Westeros is full of people calmly choosing their next leader?  The only reason it worked this time was because the only people who wanted the throne were already dead and for some reason Dorne and the Iron Islands forgot they wanted independence.  That's not going to happen every time.

And being paralyzed does not necessarily mean a dude can't have children.  It depends on the specifics of the injury.