I'm only familiar with Russian, but "es" for "to be" feels weird too. And it's used where Russian would just omit it. Are there Slavic languages that are more liberal with it? And I feel like some form of Cyrillic would be much more natural both because of the available phonemes and because I believe most Slavic speakers would be more familiar with it than the Latin alphabet. As a non-native learner, I've always had trouble trying to parse out Russian transliterated into Latin script.
This almost looks like something a speaker of a romance language would put together.
This almost looks like something a speaker of a romance language would put together.