Alright, to briefly recap what I'm thinking:

• All government signups go through a simple form that asks for a nation, for the things that the individual is interested in (Legislatorship, Writing, Military, etc.), and maybe a few general details
  
• The form is set up to create a new thread in the Welcome center, and VERY PROMINENTLY tells the person signing up that they have to pay attention to that thread for progress. If they don't respond to further questions after a week, the request is ignored.
  
• The HR department (I'll just call it that for now) checks these threads and replies with questions based on what they submitted, for example prospective legislators without WA are asked about their WA, while prospective soldiers are asked about their availability at update and that they understand that military gameplay will lose them their endorsements in TSP
  
• The HR department updates the rosters of the respective departments, to help make sure that each department always has an up-to-date roster (which has been a problem historically)
  
• Hidden advantage: With a unified signup, security checks can be more or less across the board to make sure undesirables aren't sneaking in to gain trust through venues other than legislatorship
  

Some examples for questions that would be asked in a multi-stage process:

• (for SPSF applicants): Do you understand that your endorsements in TSP will be lost when engaging in military gameplay?
  
• (for SPSF applicants): What is your availability during NationStates update?
  
• (for MoRA Media staff applicants): What prior experience in writing and journalism do you have?
  
• (for Legislator applicants): Do you accept that to maintain Legislatorship, you must vote in at least half of all assembly votes each month?
  
• (for first-time applicants no matter what for): Do you understand that the following is illegal in TSP: Corruption, Bribery, Leaking from secure channels, ...etc...