Simple Way to Update Criteria within Campaigns

Hi there! I have looked through a few similar posts but don't see anything with this specific request. 

Most teams have tons of different email campaigns, when manipulating these campaigns, each click can get time consuming as well as increased risk of human error. 

If we were able to update the criteria from within the campaign email overview/preview, this would reduce the risk of mistakes and amount of time to complete these updates. Within Campaign Targeted Criteria (on the right side), if there was a "+" button to add new criteria and an "x" on the active criteria to delete criteria, this would be a huge help. The + for new criteria would open a search box that allows you to type for the specific criteria we are looking for.

I think this solution would solve for the other posts that I've seen, by allowing people to add campaign criteria with a click of a button from the campaign preview..vs having to go into each campaign specifically and manipulate the data. It's an extra 3/4 clicks & page loads per update.

If that isn't an option, it would be nice to see the targeted criteria within the all campaigns view (vs my above request of adding it to a campaign preview page), then having the option to add/remove criteria from that page would also work.