So a spoiled upgrade card looks like this:
"While attacking a squadron, before you gather dice , if defender is not engaged with a friendly squadron, you may replace all the blue anti squadron dice with red dice "
At first glance it seems it seems it allows you to shot red dice at long range while your anti squadron armament is just blue BUT:
"If the attacker is a ship, the defending squadron or hull zone must be inside the attacking hull zone’s firing arc and at attack range of the attacking hull zone"
This is before the Roll (and gather) Attack Dice step.
What's attack range?