More fighters are nice.
The fighter is a bit lacking in focus? It's clearly mostly a sensor platform, but has very little combat value alone. They have to spread out alone or in small groups for sensor coverage, but they have to concentrate in a squadron to fight.
Nitpicks:
It can't use three advantages on a 9 G drive (TL13) at TL15.
Overpowered? You could save 0.2 - 0.3 Dt on the PP and still have enough power. A bit of extra armour would be handy.
It could save some space and money with a TL12 PP with 3 × Reduced Size.
It could get much better sensor performance (+1 to +5) by exchanging the Countermeasures Suit for a Enhanced Signal Processor, and even get better ECM performance, although at a cost of MCr 4.
A 35 Dt fighter with a missile barbette would launch more missiles per Dt or per MCr, so have higher combat value.
Does it even need a reaction drive? With only missile armament it does not need to get into close range. Without R-drive you could shrink the fighter to ~13 Dt and carry ~32 fighters.
With Virtual Crew/0 software the pilot can let the auto-pilot handle the craft, to concentrate on the sensors, or vice versa. It could even launch missiles without penalty.
I might go with something like this:
10 Dt, MCr 23, Sensor DM +4.
Fixed mount with Missile rack (power for any laser). Armour 15.
Removed R-drive, Aerofins, and extra ammo; smaller sensor and computer.