The backbone of the APD is deputies and POs, we have 104 in total on the sheets and using the 7 days active it drops down to 77, with Corporals it's only 96 active Jr APD. I'd love to break it down by how many are barely hitting minimums, but sadly the public data doesn't really accommodate that level of analysis.
It used to be that by average time, POs were doing most of the work, we're now seeing an inversion of that trend where most of the hours are now sgt>cpl>PO. This goes deeper than a 3 week old fed wave in my opinion, there's little incentive for the Jr APD to play in general. As the server pop declines, faction numbers will too, but it's not uncommon to find the server full of civs with only enough cops to fill a unit channel, those numbers only tick up when seniors or a group of Cpl+ friends get on. Historically, deputy and PO have been rotating doors and currently the numbers aren't looking great when you realize the huge turnover at that rank.
There's not much that can be done to alter the cop formula, but I believe that a lot of the recruiting and retention issues could be fixed by getting in-depth statistics and sitting down with a wide variety of Jr APD to see what they want changed. Winters has been doing a decent job, but the Jr APD idea form died out after a few weeks, and, at this point in the server's life, Jr APD participation in the bigger aspects of the faction will only become more important as time goes on to maintain more than a skeleton crew. I don't have a specific fix for this off the top of my head that doesn't result in a half-baked APD buff, but then again I'm not a decision maker so it's not really my problem to worry about. From what I see, it seems the APD is still working with the outdated mindset that tons of people want to play cop and the whitelist is a reward within itself, which isn't really reflective of the current meta, the glory days aren't coming back and the APD needs to take a page from the RnR's book and work on valuing the bulk of their faction more than it currently does.