Warning:Newb Question

[Toma]

I see how customs can help because their histories won't get screwed up, but say someone wanted a canon after the turnover. So then they make a big impact in their character development, and then go inactive. Then, later on a new person comes and applies as that same canon after the turnover, but changes up the character history. Won't it have the same effect as it does now? Canon histories would be changed up all the time if canon players kept going inactive.