Blood Weapon needs a buff. It's not actually a 10 second buff, it's something less, and that's why people have issue landing all 5 GCDs, but none with delirium.
Printable View
Bunshin was was a very specific situation for Ninja, as it was required to be changed to a charge system in order to allow their burst window to work properly in the job's current state. Blood Weapon does not have this issue and, as such, is completely fine in its current state.
It has absolutely nothing to do with ping. The "standard" GCD for DRK is 2.38, and if you aren't capable of landing 5 GCDs under Blood Weapon at that amount of SkS then your ping is so bad that that 5th GCD is going to be, by far, the least of your problems. Stop trying to create issues where there are none. If you can't land 5 under BW and you have the proper amount of SkS then you're either not keeping your GCD rolling, mistiming the weave, or have such horrific ping that you can't even play the game normally anyways.
The standard GCD is 2.43 although many do not use it because it's, you guessed it, ping reliant. 2.38 is main standard WAR because otherwise Upheaval starts drifting.
And yes it has everything to do with ping. The free Spillers are checked when you press the button and game sends a request to the server. With BW it's with damage calculation which is way after.
11/12s with 5 stacks doesn't make DRK more powerful or fundamentally different, it makes it less *clunky*.