I understand the devs separated them to make things cleaner and more organised.
However having to copy is also painful since upgrading gears then become tedious as we have to do twice of everything.
An idea is we could share the loadouts. Put a different colour boxes between pve / pvp in the loadout, also give a pve / pvp tag and let ppl filter the tag. Then we can have shared and less-cluttered loadout without having to manually copy and transfer in between.