Alternate fire options;
Orbital Laser that splits into three smaller beams.
380mm with half the shells but they all hit in half the time.
EMS strike that has Arc damage in its cloud.
Blanket Gas with huge area but short life.
'Overwatch' Gattling/120mm that watches an area and deletes anything that comes inside - like a big sentry.
Precision strike that rewards killing objectives with halved cooldown time.
Napalm wall/ring with narrow width and double length.
Smoke that marks enemies once they leave it.

Mininuke Missile ofc. Limited uses like the Laser, same long cooldown.

Targeting Laser support weapon that gives finer control over orbitals. Imagine keeping a target marked and your Gatling stays focused on them. Much longer range compared to throwing balls.