Deadeye's Called Shots feels so underwhelming

Freezing/Voltatic Mark grant a buff when consumed, but marking another target while you have the buff will remove the buff.

Called Shot is constantly overriding the buff and you lose half the power the mark grants for no reason at all, the only thing you achieve taking the node is to save half a second on boss fights at the cost of the buff lasting 3-4s instead of 17+ wit just prolonged duration. It just makes no sense.