It's important to...
It's important not to...
It's a good idea to...
It's unwise to...
Why don't you...?
You shouldn't...
You should...
You may be right, but...
OK, point taken.
You've got a point, but...
How about...?
What about...?
Have you tried...?
It's wise to...
I don't think that will work.
You ought to...
I see what you mean, but...
You might want to...
Have you thought of...?
You could always...
Good idea. I'll try that.
It's not a good idea to...
Yes, you're quite right.
I'm not sure about that.
