What I'd like to see the features for the new system are:
1. Mark up the campaigns and adgroups that contain inactive keywords.
Given the dynamic nature of minimum cpc, it would be impossible for an advertiser managing a large account to dig out inative keywords from hundreds of adgroups every now and then. An email notification to call for the attention of the advertiser would be even better.
2. A single input to raise the max cpc for all the inactive keywords account/campaign/adgroup wise up to their minimum bid prices.
This will come handy when advertisers want their ads to show up immediately and later finetune the relavancy or any individual keyword's cpc.
3. A simple and easy to use feature for advertisers to check the current minimum cpc for a given keyword.
Google will let us know when the minimum bid price goes up, then why not let us know too when it goes down?