In your example for (A), you’ve unnecessarily used a controversial item in comparison to information/tool that is publicly available and cannot be used to do harm beyond holding individuals accountable, which for law enforcement, needs to be doubly more so.
A more comparable example for (A) would’ve been something like the location of a police station, which of course needs to be public, and publicly available and announced.
40 months is in no way long. All my devices last well beyond 5 years. Then I repurpose them if they’ve incompatible with accompany services like the internet or something.
I’ve dealt with this exact issue. Increasing font size (increasing smallest feature size) helps. As does printing the letters first, as you have found. Although sometimes the letters dislodge and become floating letters a la Alice in wonderland. Depends on your bed adhesion.
Then linewidth on the perimeter touching the letter is something you could look into. (Reducing linewidth to reduce overlap/bleed)
It won’t be one magic solution, rather a combination of several factors all contributing to a more acceptable result.
Not supposedly, a group that is duty bound to be accountable.