FDev apparently doesn't even realize how much the mission generating system is broken. They have no intention to fix it on launch of the single mission server system.
The result will probably be months of waiting for FDev to realize the problem and fix it - if they fix it. Time in which players have to deal with the broken system.
Or, being the game designer and producer, they are very famiar with the global technical/balance issues surrounding the mission system & are well aware of the common player grievances (the din is truly deafening some days), and possibly even have a number of ideas/changes already in the pipeline, but are doing the proper thing, as a developer, and after switching servers will be letting the new system bed in and undergo some play-testing before introducing further coding changes on top of a significant structural change.
Or, they have no clue, no intention to make changes, are making it up as they go, and the game is dead.