As someone who wrote much of the original guidelines on the wiki, yes the current usage in India of using English in the name tag has its problems, but overall less problematic than other alternatives. The approach values data consistency and usability on a national level rather than local/regional level.
While this is factually true, it should also be noted that knowledge of the latin script is more widespread and so is the usage of common English words in all regional languages (eg. shop, hotel, railway station etc is understood throughout the country).
The proof of this is the prevalence of signboards that have English names even in small towns that may not have English speakers. The exception is deeply rural areas, and in such places literacy itself is a barrier for written text to be consumed by the people.
Moreover reducing each state to one local language will eventually lead to further conflicts going ahead where multiple languages/scripts are used (eg. Telugu/Urdu in Telangana) and run the risk of marginalizing minority communities. The eventual solution might just be to overload the name tag with multiple languages.
jmacker, you mean well with the changes, but the complexity of language situation in the country means there is no way to satisfy everyone. The de facto approach of using the latin script as the default name has been more inclusive and neutral than other approaches.
Its also completely fine for local communities to deviate from this scheme if that works well for their use, eg. in a village or tribal area, but for catering to the largely urban user base, the current approach seems to work. Any change should take into account the practical issues rather than being led by the politics of language.