2016-02-21 22:58 GMT+01:00 Federico Leva (Nemo) <nemowiki@gmail.com>:
Nicolas VIGNERON, 21/02/2016 21:39:
Maybe there is other alternatives but no one has pointed even the
beginning of an option.

It would be easier to point options if we had answers to the basic question "for which languages exactly do we need another OCR?".
https://lists.wikimedia.org/pipermail/wikisource-l/2016-February/002712.html

If people on this list are unable/unwilling to answer, can someone suggest where else/how to get/build an answer?

It seems to me that the answer have been already given :
Ideally all the wikisources need an OCR and in particular the indic language have no free OCR (AFAIK) ; Bodhisattwa pointed to http://wiki.wikimedia.in/List_of_Indian_language_wiki_projects last december on the community wishlist and you give the other half of the answer yesterday.

Meanwhile, I agree with your very last part : we should put this somewhere public (on oldwikisource ? on meta ?) to have a broader view and gather more insight on the subject (not only indic).

Cdlt, ~nicolas