Wandering Traders that have never traded should be recruitable guards.

I know that Villagers are pacifists but the wandering trader is a whole different mob so this post technically does not break any rules (Not trying to be sarcastic or rude.). The ones that have never traded should have the ability to become guards if an unenchanted iron helmet specifically is given, they would have the ability to use shields as well, you could either give them an unenchanted crossbow or an unenchanted iron sword specifically. It would make sense since they have been in the wild & should have the ability to basic do self defense. Once a trader has been converted to a guard it's clothing will remain the same but instead of folding it's arms it would place them normally like players. Traders that have been converted can never trade again & never despawn. Ones killed by zombies get zombified & can be cured again. However the ability to be converted would be a 50% chance so all traders can't be converted. As for the trader llamas, the trader would still have them but as soon as he converts he would tie them to the nearest fence post & if there isn't any in a 100 block radius it will wait till it finds one.