This is not intended to be a discussion about trying to fix the ship with new upgrade ideas to pitch to FFG. Rather a discussion to formulate ideas about how we might be able to use the existing ship more efficiently with existing options.
I got to thinking about this as I was in a discussion with someone who asserted the X-wing fell flat on it's face against large turreted ships. This let me to a realization. Many people try to outgun a large turret, and the X-wing just won't win that fight, but how else can you go at it? I realized large turrets cost a lot thus limiting the number of ships on the enemy side. As such the turret should be the toughest attack headed your way. This means you can divert from using your focus tokens for offence to using them for defense and possibly get more use out of them. You can also maneuver to keep at range 3 for that 3rd die. 3 dice each with a 5/8 chance to grant you an evade is going to make dealing damage to you a much slower process. Add in Expert Handling and you can shake off a TL or Engine upgrade to help keep out of range 1-2. Use R7 to convert your TL into a defensive tool. Use a Flechett torp to keep them from getting a Focus or TL. You get the point... Your opponent brought one big gun to the fight and you have the power to neuter it with a wide range of defensive options.
That I think is the beauty of the X-wing. It's stats are pretty bland, but this allows it to be quite versitile. That 2 agility is pretty weak in a lot of situations, but facing a large turret can be easily used to your benefit with some smart flying. The HP on the X-wing is also pretty bland, but facing off against smaller more agile ships it will have the HP to last and with some good maneuvering some range 1 attacks will tear small fighters a new one.
I think the X-wing has the capacity to be a good ship, but requires some really smart flying and a strategy tailored to the opponent it is up against.