The idea i present is doing the same thing, just with the option of capturing enemy fleet. But to avoid ships being captured forever like in beta 1, it should have antimatter that get drained when ships actually are there.
exactly, I don't want the old one back either, but rather a hybrid of what we have now and what we did have, i am sick and tired of enemies retreating their whole fleets as soon as they lose a capital ship...
What's the difference between holding a fleet indefinitely, and holding them for eh, 2 minutes? Everything's going to be destroyed in that time anyway. It's the same effect of the structure, and a flat duration is either flatly too long, or flatly too short. There's no middle ground.
If you're sick and tired of enemies retreating, why not follow them and take advantage of a) them losing ships on the way out, and not being able to return fire since only capitals can shoot backwards,

100 less antimatter per ship, and c) you being able to jump in at an angle to be in perfect range to intercept their retreat?
I like that the PJI is not a "slap on every planet just because" building. It's very specialized, but it's extremely good for what it's meant to do. It's a specialized, not a generic building. By its nature it shouldn't be used unless you need it.
I find it rather ironic that on the one hand the same people who are pushing for ways to make it so the game rewards several but smaller fleets at the same time push for a change like this to the PJI that would make it a death trap to jump into any planet with one without a large fleet