Sorry, i wasn't disagreeing with you Angelo and in fact i'm certain you're on to something. As stated i'm happy to help privately by PM exchange, but on reflection it's better publicly in a thread dedicated to modding the files to enable TTS3 voices in 2012 series. That way we can get others like kunix and Alex interested as you mentioned and Loly too because i know he already has an interest. He and i did some initial work together privately on enabling ALG and TTS3 on 3590. Goodness know what progress has already been made in the Eastern Bloc that we're unaware off.

You should start a thread mate, 'coz it's your idea about the files interaction. I'll gladly help as much as possible in my usual clumsy way [with testing at the very least ....].
Continuing here in Maps would be OT and maybe not get noticed properly anyway.