The clones customized quite a bit though
Yet remain recognisable as units: it's minor things like a marking or two on the helmet or the extra equipment they use. It's a stark constrast to the old EU Mandalorians which share the armour shape and that's about it.
As for the pacifists, maybe it's just me, but I can't believe an entire society would be stupid enough to kill off their enemies, then become pacifist, and then expect that because they've rejected war, they can be neutral, and pander to both sides.
This happened before the Clone Wars. Mandalore became politically pacifist although it still had security forces: it could deal with small threats and if anything too big happened the Jedi (who assisted the winning side in the Civil War) or the Republic would help out. Mandalore refuses to participate in war, it doesn't refuse to defend itself else the Death Watch wouldn't have had to win over the populace before taking power.
It was the Clone Wars that made Mandalore's stance difficult and even then it was protected from the main powers by its position as leader of a large league of neutral systems: neither side wanted to attack it unprovoked for fear of driving that league into the arms of the other side.