But mainly for that reason, I would like to keep as much as backward compatibility, and if I have need to add a field, I can do it without changing some other f

But mainly for that reason, I would like to keep as much as backward compatibility, and if I have need to add a field, I can do it without changing some other function. (If need to, I'll add it in both places). Hard to tell really, for some things it might not make sense at all.