Then they bring 2 more Talos.
Your idea does nothing to actually make a difference in practice.
To make it actually interesting and a fighting chance you have to increase the timer to lower the number of talos they bring. Lower numbers and more time actually make it possible for you to fight back.
There are other changes that can be done alongside this to make it even more interesting and uncertain for both sides, but the core principle is that the longer there is to react, and the lower the ganker numbers, the more chance to do something.