Do you think arma3 eden editor is not ready yet? Do you think its too fancy for its own good? Do you think it sucks?

No problems, you can still launch the good old 2D editor we all learned to use since OFP times. In ArmA 3 main menu click / choose Editor, then in the terrain selector screen use shortcut CTRL-O and it will start the 2D editor.

Missions created with 2d editor are saved to the good old mission.sqm format.