Essentially, the reason is to give a tangible advantage for the moneysink that Battleship Scanners represent to the largest ship classes which would be imbalanced if accessible to all ships, since better scanners are much more effective the smaller and faster a ship is and the smaller its combat range.
The moneysink scanner for the other shipclasses is represented by the Spyglass Scanner, which any ship can mount and which still presents an advantage over the standard Advanced Deep (15/3.5 rather than 15/2).
I'm open to the idea of slightly improving the Spyglass but it won't be as effective as the Battleship Scanner.
![[Image: jWv1kDa.png]](https://i.imgur.com/jWv1kDa.png)