I was annoyed about same trouble with Harvesters some weeks ago playing 2.3 development edition. Seems that this trouble is still there with new ships and new type of alien plating armor on ships also, I think ship armor system is not implemented? Harvesters are only alien ships with real teeth in moment, all interceptors will be shot down by them. Sometimes before interceptor shots down Harvester also. Even if interceptor will turn 160 or 150 degrees back - alien missiles have too good homing. It's nice, but at least one hit should be survivable with armor or alien plating armor. EMC is also not working, maybe we could have "chaff and flare" dispencer's like military crafts today?
At same time missile firing was strange because in most cases when missiles are fired one is fired directly to target (in Harvesters moving direction) and two are fired in 45 decrees left and right from Harvester. So two useless missiles not homing and one useful.
I wont complain that we have frontal intercepting with Harvesters now - because Harvesters should be able to survive at least one or more hit's (like our interceptors) and are heavily armed and have radar covering in all directions (unlike modern fighters like Mig-29 or F-22), that they should turn to target, probably make evasive actions also, not to fly really out, but to intercept interceptor's. Stiletto and our other fighters should also make evasive actions at same time when intercepting Harvester. For hunting bigger ufo's like Harvester we should probably use more interceptors from different angles coming in, so Harvester will be overrun. But our interceptors should have ways to survive too still!