Peptos

It makes sense though, we run in to the same issue on Earth. It gets too hot 

See, in WoW, you could Log off wherever you pleased, BUT, if you did log out in a certain area with beds (an inn for example) you could get rest bonuses, which amped your XP gain. Now, the rest bonus could possibly be a speed boost when running on the ground, ora drop chance increase, something to give an insentive to log out on a place with beds.

And logging out would require a ten second period of out of combat activity. No Alt+Q+Q when losing a battle.

You will be able to sell your blueprints on a ingame market or simply give it to your friends.
And a editor as you have described it will be integrated as some sort of virtual reality that you can enter in game.

There is a dev blog that explains their intentions for this. 
Here is a link it.
 
Scroll down till you see the part referring to protection planned for builders:
 
Virtual Simulator: enabling player to enter a virtual world (call it “inception syndrome”!). While in that virtual space, the player would be able to design any construct, in a completely peaceful setting. This would help builders to design their construct and create their blueprints safely, without being interrupted by any PvP action. For ships, it will also be possible to test their flight mode, without risking a crash or wasting resources!
 
I understand the desire for an out of game voxel creation tool that can import the blueprint into the game. 
However, it is equivalently asking for the devs to create a tool to keep you from ever entering the game. Keeping players on their servers while they create their content is also conductive to fair game-play for other players and the moderators alike. Think of it like everything created in the light of day is clean, fair, and equal.  

It would be a good idea to introduce an Editor or a Tool App independent from the game to build and experiment with your creations that you are thinking.
 
And also having a tool to share blueprints and models to your friends, or having a WorkShop.