The devs seem swamped by urgent tasks and are late with everything they do. That state of mind is not conducive to looking for ways to improve the game. If you stepped into their studio and said "I think voice overs would add a lot to the game", they would stare at you as if you were at a wrong address, despite being completely right. They just want to finish this and not make more work for themselves.
Wait, that's reality and reality = bad.
I mean, the devs would welcome your suggestion and take time to hire a good writer to write a novel-worth of interesting and original dialogs, then hire a voice casting agency that will find the right talent and finally record the voice overs in a professional studio under direction of the talented game designer Armagan himself.
There's so much potential here! Maybe they already made this and will surprise us in the next patch! This must be the reason why it is delayed!