I think you could start with the core values that are present in all religions and build on that.

It shouldn't be replaced with anything. It is unnecessary.

Replacement not needed.

Let's just go with laws and the golden rule.

Just get rid of religious bullshit. No need to replace it with anything else.

World Co-Operation.There is plenty to go about For everyone.

It doesn't need to be replaced with anything.

Why should it be replaced with anything?

Churches always have to hijack morality and if you look past a surface scratch you will find everything from stealing church goers contributions to sexual molestation of kids. They are not the rulers of morality and morality which can be easily achieved without any church. In fact, without churches trying to corner morality as their own, we can be a more moral society without them. All you need to do is look around. You will not be pleased at what you see. Most of us can easily figure out is something is wrong or if you are about to do something wrong. what do you ask, a priest with a bunch of child molestation in his pocket. Remember, morality is not controlled by the church. The history of abuses is too long for this comment. So no. Do not look at religion for morality.

Why should it be replaced at all ?

Doesn't everybody know how to be a good person, as opposed to stealing, lying etc.

Secular Humanism.

I would love to see humanism replace religion. Imagine a system where everyone worked for the good of human beings! That would be truly wonderful.

Let's just not replace religion. Ethics and values already exist outside religion.

I just cringe at the idea of another set of groups that people join just to feel superior to each other.