I feel the first option is probably the most viable. Especially if someone sets the code to something like 'dog' and the strength meter tells them their URL can very likely be stolen. Maybe integrating this with a list that showcases highly compromised passwords, if that resource is available to you at all?
Option 2 could be beneficial to some, especially for higher demand URLs, but I'd be rather paranoid about misplacing my randomized password. I'm assuming the intent behind it is to have the feature remain optional per URL, and if so, then I believe some increased URL verification would work best here. Something where the system can keep track and send the randomized password to the user in question. I believe this would work best if integrated with the claim system, rather than implementing it for URLs that aren't reclaim worthy. Although making it reclaim-exclusive might defeat the purpose, those are just my thoughts on the idea.
As for the third one, I believe this would cause more problems than it'd solve. Similar to the randomized passwords idea, I'd be fairly stressed about misplacing edit codes, and especially worried about being able to edit my URLs if I were bulk updating them.

SMILES.... GRINS, EVEN !!
🧨 - the boys Oh god the boys i am still so autistic over the boys.gfuck. jesus christ. oh my good lord. Fuck. you ever just think about a series for a little bit too long and you start to feel nauseous? yea.
lately i've been thinking about joe kessler and his dynamic with butcher. his existence makes me CRAZY and knowing that amazon is gonna milk this series for as long as humanly possible, i am hoping to god they release a few shorts with butcher and kessler back when they were in the military.. MAN.
also season 4 sucked ass until the last 2 episodes and maybe one or two episodes in there were good too.. hope the writers strikes that happened during that time succeeded and they actually get paid properly because that shit SUUUUCKED
🧨 - since you sent two i'm gonna take it as a second one :3 i just recently got back into hlvrai and DAMN i forgot how good of a series it was. i also forget how many little tidbits of autism knowledge i have lolol.. wish the fanbase wasn't like that because watching it with my girlfriend, shi was SO surprised at how different benrey is compared to his fan interpretation and shi is really enjoying the series :~) i can also feel the half life bug biting me i Know i'm gonna get turbo autistic about the series as a whole because of this. such is life..