First off, I have to say I'm loving this game. I'm ex Brit Army Air Corps and have been waiting for a game like this for years.
Having said that, after just buying this game and been playing it solidly for about five days, I've come across my first niggle. The timing of some of the auto saves. I'm on the mission where I have to shuttle back and forth picking up containers from the ship and dropping them off at the compound. I'm flying back to the ship to pick up the last container when I suffer the engine failure and have to auto-rotate to a landing.
The problem is it auto saves just 1 or 2 seconds before the failure and at that time I'm only 130 ft AGL over heavy tree cover. I have nowhere to go. My only option is to start the whole mission from the start again. If the autosave occured even 5 seconds before the engine failure I could at least gain some height to give myself a fighting chance without the need to start from the beginnig of the misson.