Altering sims personalities during gameplay

How would you guys feel about something like this? Say that your sims can change/gain traits because of their actions, kinda like parenthood. For example, if your sims read so much they can gain the bookworm trait over time, or if they stopped playing games for a very long whilel/stopped doing any other activities and interactions related to the geek trait they can lose, they start feeling tense when they first stop but after a while they just lose interest. So you start with an evil sim but you can turn them good during gameplay by your actions and to make it more challenging they can lose some progress if they do evil things automansly. It can work the opposite way too, good sims can turn evil. Or if you take a sim that hates the outdoors out a lot they wont necessarily start to love it but they can slowly get somewhat used to it and wont be as uncomfortable as they were in the start.

Another way is sims traits can get affected by who they befriend, so if your sim has a materialistic best friend that can rub off on them too, that doesnt mean they should become copies of their friends. It doesnt have to be every single sim that "works" like this, but maybe some of them can be more open to changes, or easier to be a little influenced by others. Any traits you dont want to be ever changed you can lock in place.

How would you feel about your sims personalities getting altered over time?