Button Remapping in Linux

I have a Razer Trinity Mouse and am quite frustrated over the User Experience I have with it under Linux. While opensource drivers allow me to change colors (everyone knows this is the most important feature) I have no way to remap my buttons according to my use cases. It is unfortunate that Razer does not add support real support for Linux or at least lift the EULA as stated in: "The EULA of the Razer configuration tool prevents us to reverse engineer their protocol. Until we have legal access (or maybe a clean room implementation), we can not support those devices in libratbag." - https://github.com/libratbag/libratbag/wiki/Devices How hard can it be to let us remap shitty buttons. PLEASE!