This is your problem. You read terms such as "Early Access", "WIP", "In Development", "Alpha" and gloss over them as though they are...nits to pick. Until you really believe that what was advertised is actually true and that the developers really were being honest in giving access to an unfinished under-construction project, you will always feel resentment and impatience. Those of us who aren't upset are here because we like the process and enjoy experiencing the journey. Those of you who are fed up just want a game to play without annoying bugs RIGHT NOW because you paid for the game and are entitled to be able to play it.
Sorry. You actually paid for access and the game will be delivered at no extra charge once it is completed and the timetable is what it is and not open for debate. The fact that this is an ongoing project since 2012 and will be (most likely) a 2019 game is not just semantics. It is the whole point of these forums and all the discussions and sharing of ideas is based on the truth that the game hasn't arrived yet.
Someone just asked a few posts up why the devs can't just pick out a few highly desired changes and push those out. The reason is that A16 is not the game. They've moved on and putting any time into making changes designed for the next iteration to try and work for the current iteration is completely wasted time and money. A16 is a dead end road. A16 is not the game.
...and welcome to the forums.