::What I seek from you or anyone else is: 

 1. Is Goa special or deserves mention? 
 2. If so, what is notable about the situation? 
 3. Are there references for 2? 
 4. What are the most important details, if any, about Goa in relation to India? 

 Number 4 is pertinent to the India article.  More detail is appropriate for the Goa article.  One example of undue weight is as follows: Anna Nagar is an area of Chennai.  Description of Anna Nagar in the India article would be undue weight (at least from what I know of the place).