Although I don't know Estonian I suppose it's as difficult to learn as Finnish (of which I only know a few phrases and words, though I did make an effort to learn more) or Polish. I don't suppose we, peoples whose langauages have never been international and which are quite complex, expect greater recognition or usage outside our countries. It's charming when foreigners do make an effort to learn our languages ,for whatever reason,( and in case of Polish I personally know quite a few very fluent speakers of excellent idiomatic Polish from such countries as Nigeria, Spain or France) but I don't think our ambitions or hopes go further into the international arena!