Honestly, D-scan should be removed for no other reason than the ability to generate extreme lag.
In a huge fight, every ship can call upon the location of all other ships within 14AU, without module or cooldown needed!
At least an ECM burst jammer takes a lot of capacitor, takes a mid slot, has a 30s cooldown and has very limited range. D-scan however has none of those limits and is available to every ship in such huge battles.