Well they are also introducing a bump timer but 3 minutes is still way to long. However what they need to do is make it so any ship that is docked when that timer starts cannot engage the bumped ship in Hi-sec so the criminals cannot hide until the last second.
The following table gives the time in seconds between the offending action and the first felt action of a CONCORD ship when CONCORD has just spawned in a system.
0.5 : Roughly 19 seconds
0.6 : Roughly 14 seconds
0.7 : Roughly 10 seconds
0.8 : Roughly 7 seconds
0.9 and 1.0 : Roughly 6 seconds
When CONCORD is already on grid, the response time is severely reduced. There are no hard numbers on that yet but it looks like as if the response time drops to 2 seconds in 1.0 to about 8 seconds in 0.6 and 9 seconds in 0.5.