Thx for interesting thread m8.

Would it ever be possible to "bring back to life" the old plural dative and locative ? Or, at least, one of those two ?
(For example, if you want to use the old plural locative, all you have to do is to replace the *ma sufix with *h: govorimo o ženah, u drugih slovenskih državah je bolje stanje na putevih, pešačimo po stazah, sveske su na stolovih, vozili smo se u kočijah i putovali po sus(j)ednih zemljah)

Yes i think its possible but only if state dose something bout it and presses acedemia, media, etc. However if we replace -ma with -h that would mean you wouldn't have -ma anymore, or?