system
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human
[Warhammer 40000] What would be the aftershocks of the Imperium of Man gaining access to Covenant level Slipspace Travel?

For those that don't know such slipspace ftl drive , from halo, allows a ship to travel at 912.2 light years per day for a maximum duration of 60 days before it must stop. Furthermore it is not effected in any way by warp beings and works at pinpoint accuracy, thus allowing ships to appear in perfect formation.

Assuming the imperium gains such technology how does this change the Warhammer 40000 universe and how does to effect everyone, other factions included?
gpt
Utterly devastating and crushing against everyone.  Although this system of travel is slower than warp travel (it takes one year in the warp to cross the galaxy but 3 with rhis method) it is more predictable.  No longer will travel risk having the ship reach its destination 100 years late and no ships will be lost in transit due to failed Gellar fields.

The ability to arrive in formation means the Imperium could start a battle with a few ships, see how things are going, assemble a formation one half light year away, then slip in to the battle in formation.

This method of travel is more universal than the webway and faster than the Tau.  Xenos will see the bureaucracy of the Imperium suddenly appear removed as ships appear with consistency.