Its like i got the skin in the first day of the release for 25 euros just to hear some changes for my self and i like to hear his second voice lines with allies or enemies with the same voice AND i like how only my fav hero has no voice changes for others but other transformers skins do, when will you update his va?
Ramattra Megatron DOES have his own voice filter, man 
. But it is very indistinguishable for a character who is already robotic by default.
Here is an audible example: https://drive.google.com/drive/folders/1TPdzYsHDT3KMn-_0__pCT1YEo5SLvgM2?usp=sharing Listen to the difference between the two vocal lines “I tire of these games” and “I will tear victory from your grasp”. 
Note: By default, Ramattra in Nemesis has his own voice filter. In the Megatron skin he gets a double voice filter. It’s difficult to apply a robotic effect to a character who already has an amplified robotic effect applied (the nemesis form, precisely).
I don’t know if it’s any consolation to you to know that he’s always had this vocal filter…
You are not going to get a reply from the devs on this. This TF Promotion was a bad idea if they are not going to give us the choices for TF that we really wanted.
Soundwave Reaper…
Not sure what you’re talking about, Megatron Ramattra has a voice filter as well too.
can you even hear voice filters on allies? for the mythics you just hear their normal voice. i’d assume that’s the same for these skins
but not for allies or enemies