Please help regarding diacritics in Indian mythological names 

Can you please help me regarding the use of diacritics in Indian mythological names used in articles? I am trying to find a policy page (if it exists) on the usage of names that have diacritics in other articles. Some articles include the diacritic information when   non-English words are used while others don't mention them. This sometimes leads to incorrect pronunciation. For eg: in this article Vishvamitra, "Puthrakameshti" is mentioned in the section "Kaushika". In "Puthrakameshti" the first "a" is short while the second "a" is long thereby requiring a diacritic. As you can see, the diacritic is not used in any part of this article. But in this article Valmiki it is used, "kāṇḍas". Do you know if a policy page exists on this? 

What is a nice balance between making it simple and following proper pronunciation? If I include diacritics on every previously unspecified non-English (in this case, mainly Sanskrit) word it would become difficult to read the article. The other extreme is also not very desirable.

Thanks a lot.