dont you agre?!?!
Yes, this idea does up reasonably often, Billy_Blue - and in fact I passed it one in last night's Advertiser Feedback Report, as it was mentioned as Message # 13 in this really excellent thread started by our moderator:
Google Adwords Features I'd Like to See, #6
Continued. Share ideas for making your life easier
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I agree the idea is very attractive, though I will say that (like many things) it is not as simple in practice as it at first appears to be in principle. ;)
In any case, the product folks are well aware of this idea and I do ping them about it from time to time to keep it fresh in their minds.
AWA