There is major problem in depending upon Non-FOSS solutions. It seems google used api's for collecting crowd sourced input for improving their database & now shutting it down. Input methods such as Tranlitration does not need online services . It can be easily done without google or microsoft. And popularise extensions such as Narayam existing on mediawiki is the best way to move forward. In addition, it will be good if Indic wikipediam's can develop a stylebook for correct usage and link it with extensions such as narayam. Then the possibility of typing errors can also be reduced.
In my pinion Translation Service& its api of google for indic is not that great anyway , and usable for wikimedia projects . So i believe it will not make much issues in wikimedia indic projects
Anivar