I would like to preface this by saying this : It's a very well made mod, you've managed something that honestly feels great, if rather clunky right now
And I would like to suggest some improvements in managing the cores and the XP

To begin with, the cores feel... A bit clunky to put in? It might be better to add some quick way to put them inside of a turret (either by ctrl-click or by hotkeys to do that), manually putting them each time feels real clunky when you are trying to do more than just a few.

Second is some manner of preplanning stat acquisition, as in, a copypaste-able function to take a custom set of orders (10 shield, 10 resist, rest in damage) to not have to micromanage them all the time, there can be times where you just forget to put in core points.

Otherwise, the mod is frankly impressive and I do hope you continue developping it!