Default Do you want boosted earpiece or bluetooth audio first?

As you already may have noticed I'm developing volumemod for our Z1. I've got reports that it works great on Z1, Z Ultra, Z1 Compact.
My time is limited these days, so I don't have that much time for development, but I'm still doing it when I can.
I'm wondering, what do you want to get boosted first? Earpiece volume or audio over bluetooth?
Bluetooth will be harder, but I should be able to do it eventually.
I don't mind which one would be first as I'm perfectly fine with earpiece volume and I don't really use audio over bluetooth.
My work on xda and things I'm proud of:
Single link for that as the sig got too big ^^
If you want me to reply then please quote my post or mention me by writing @olokos. This way you can be sure I'll reply. sooner or later :P