Even so, running away would have been an excellent idea.

At the time, this had seemed like an excellent idea.

What an excellent idea it was coming out like this.

It seemed an excellent idea to put this to you.

Actually, yes, it would be an excellent idea in this case.

This is an excellent idea and I hope others will follow your lead.

I will go further than that: we think it is an excellent idea.

I think that is an excellent idea and hope it will be continued.

From everything you've just told me, that's an excellent idea.

It's an excellent idea, but most of us probably won't do it.