What will be the best all around set up for ONE hotkeybar, in pvp and pve as: NB, magicka build, All HA and 1H/S?
Nothing.
The best would be to use both bars.
August Palatine Davadin Bloodstrake - Nord Dragon Knight - PC NA - Gray Host
Greymoor 6.0.7 PvP : Medium 2H/SnB The Destroyer
Dragonhold 5.2.11 PvE : Medium DW/2H The Blood Furnace
March 2021 (too lazy to add CP) PvP: Medium DW/Bow The Stabber