Meaning of 来 as in 你来给我们评评理 你来给我们评评理

Three people are discussing something. One of them asks another to be judge on who's right.
What's the exact meaning of 来 here? Since three of them are already together, it shouldn't be &quot;come here&quot;.
The &quot;来&quot;, &quot;come&quot; here acts as a form of &quot;invitation&quot;, inviting someone to give an opinion or judgement.
Like, &quot;come, give us your view on this matter&quot;