movement speed
Hrm, not really.
There’s no physical reason why someone in heavy armour cannot jog as fast as someone in padded cloth (which is not a very light type of equipment, btw).
However, they would not be able to keep it up as long.
Basically if GW2 had sprinting, heavy armour should make the pool drain faster.
What bugs me is that speed doesn’t stack, making multiple traits and skills worthless. If they stacked, that might be interesting, probably hard to balance, but interesting.
Eg Elementalist 5% air minor + 25% dagger trait + 25% signet of air for a passive 55% speed buff with a significant investment (25 trait points and a utility slot off the top of my head). Due to the gap finishers, etc maybe it might be balanced, but probably not. Would reduce moaning about mobility on the dd ele at the least though XD.
But then Guardians would be in trouble. I’d suggest all classes get at least 1 way to get 25% then, with more ways based on the need/role of the class.
Similar to your idea, but instead of base, make it a build option to encourage choices
If they did implement a speed system based on armor, it would mean that people would just run around naked until they came to an impending battle, then would equip their heavy armor.
It would possibly be a bit more realistic, but would be cumbersome to players and annoying in general. Plus, they would have to put that into their profession balance considerations, meaning heavier armor would probably mean additional durability, CC, or general means of catching people.