I think we need 3 changes to make Disco more balanced. They are easy to implement:
1. Reduce Bots and Batteries of all Snubs by 1/4 or 1/3
2. Increase the velocity of fighter gun projectiles by 100m/s across the board
3. Reduce the range of the SNAC to ~1100m
Number 1: Reduction of fighting time against snubs, caps can fight them more efficiently
Number 2: Fighters can kill other snubs easier now, the endless dodging and the heavy advantage of small-sized ships would be countered a bit. Escort fighters could fullfill their role much better and intercept attackers more efficiently.
Number 3: Bombers will have to take more risk in order to kill capitals.
Gunboat vs Bomber will not be affected, because bombers do already have to close in in order to hit. A 2000m SNAC-snipe can be dodged easily in a GB.
Cruiser vs Bomber will bring Cruisers in a much better position. Currently, their are the most vulnerable ships, in my opinion. Slowly turning guns, short range on Anti-Snub weaponry and larger size make them easy prey for 2-3 Snubs.
Battleship vs Bomber will also benefit the slow and sluggish Battleships that cannot defend themselves against Snubs efficiently. A SNAC has almost the doubled range of a Solaris and there is no need for a bomber to come much closer than 1.5k to hit a BS.