I'm playing the Long War mod for XCOM: Enemy Within and I'm nearing the end of month two. It's never been easy to shoot anything down... it usually takes 3-4 interceptors just to take down a small scout. Now that the game is progressing, it's getting even harder, and even rotating through 7 different interceptors I'm running into problems where they're all out for repairs when new UFOs hit. This is even considering the fact that I let the larger ones through without engaging!
I feel like I need to focus my research on some improvements that will improve the effectiveness of my interceptors. I've seen the tech tree for Long War but honestly that thing is so huge and lacking in description that I'm having a hard time making heads or tails of what path I need to head down to become more effective as quickly as possible.
What short term and longer term plans can I make so that my air force stays effective?