The problem with that is that in quite some cases I don't care about the security so I can just use a crap password. But a sufficiently long password could lit

The problem with that is that in quite some cases I don't care about the security so I can just use a crap password. But a sufficiently long password could literally just be 'a', repeated. Would that really be more secure? Honestly if you want somebody to have a secure password, make it for them and e-mail it to 'em. Virtually no chance they are going to use it for anything else, and if somebody has their e-mail, they can recreate one anyway.