That's not a bad idea.
Maybe we...
This is just what we need.
What a good idea!
I don't think this...
I think we...
Let's try that.
Why don't we...?
I don't feel like it
What if we...?
How about...?
That sounds like a good idea.
That's a good idea but...
I'm not really sure/ convinced...
Let's...
I'd rather not
What an awful / bad idea!
It might work
Yes, I'd like to.
Why not?
