New to traps - some questions

Trying out blade trap and it seems incredibly overpowered, at least for leveling. Some things I was unclear on though since I've never used traps before:


1) Does a trap that has been triggered count toward the trap limit? Will throwing more traps potentially remove a trap currently spinning?
2) The "chance for traps to trigger an additional time" seen on the saboteur ascendancy and the unstable payload jewel... is this effectively a More multiplier, or is there some catch?
3) Does anything affect the time it takes for the trap to fly through the air? Like projectile speed, or trap throwing speed? The delay between using the ability and it going off seems like it might be killer in late game where a mob being alive for 1 second can spell your doom.

blade trap specific:

4) Does attack speed and rotation speed matter for overall dps? (assuming a stationary target that's in the spinning 100% of the time)
5) 2 hits per rotation, correct? Twice with the same weapon if using 1 weapon, 1 hit per weapon if dual wielding?

2) its a more multiplier but this means that trap remains on the floor i believe, and needs to be trigered by the boss, but if u throw at boss feet, then yes its just a more multiplier
3)no it flies at same speed
4)attack speed no, rotation yes

Hrm, blade trap's tooltip has an "attack time" that goes up and down with attack speed but not rotation speed. It might just be superfluous and not actually used for anything though.