I is not my intention to discuss whether squadrons are good for the the game or bad. I think they are cool, but I can see how they can make games slower and take more energy.
In the current Meta squadrons are strong, so much so that some people have bemoaned the fact that that you can't play competitively without them. For those of you who want to try an a squadron-less list (or minimal squadrons) let me suggest ISD (probably 2s) with QLT. ISDs have good anti-squadron batteries and enough hits that they can stay around long enough to kill some squadrons. But their are a couple of things that make ISDs that much better without squadron support. First of all Gunner Teams. No I hardly ever take ISDs without gunnery teams so it isn't much of a consideration to make sure I have them if I don't have my fighter screen. Secondly I love QLT. Sure it is only one dice back every time you are attacked, but there are lots of fighters that only throw one dice against ships, so it is a pretty even trade. Finally Leading shots, again this is a pretty common upgrade on ISDs no matter what, but don't forget that you can spend a blue dice to reroll the rest, this is great insurance against a double miss.
A couple of other things to remember on non-ISD ships. Warlord on a VIC lets lets you change accuracies to hits on AA attacks as well. And though it has often been maligned, the raider can provide cheap activations with your ISDs as well as fighter cover.