1. If, for analytics reasons, Ad Groups can't be deleted (but only crossed out) within Editor, why can't the system,so that, INSTEAD OF all the conflicts (if you're opting to hide your deletes, this entire process is NOT intuitive and gives headaches, WHY NOT INSTEAD just NOT allow you to create that new REDUNDANT AdGroup, but instead suggest "Would you like to modify your EXISTING Adgroup of the same name?" This seems like a MUCH more intuitive, user-friendly approach, and you immediately scroll to that conflicting kw, or Ad Group.
2. SECOND SUGGESTION/PROBLEM/AREA OF IMPROVEMENT/CONFUSION:
In Editor > Campaign tab, we have "Computers and Labtops" as being able to view our Adwords ads, and we do NOT have "mobile devices or tablets" as having access.
HOWEVER, in the "ADS" tab, at the bottom right of the screen, under "DEVICE PREFERENCE", you only give "ALL" or "MOBILE". That's deceptive. You should give all the same breakdown that you give in the Campaign tab > Devices > Edit for better transparency and intelligibility.
3. Finally, something very annoying about Editor that's still not fixed. When you're in KW, ADS, or Ad Group tabs, the ONLY way to get the COMPLETE LIST to show again is to go to the left panel (ad groups) and scroll ALL the way up and then click "FBR Campaign!" It's silly. INSTEAD, just make it easy for your advertisers by doing this:
Add a button to the right of "CAMPAIGN" tab that says "SHOW ALL (Kws/Ads/Groups) in this Campaign".
We experience these problems not just daily, but at least 20 times a day and it's just old stuff that needs to be fixed to show more respect for your advertisers by making the user experience easier and more intuitive. Right now it's anything but that.
Google- PLEASE FIX THESE 3 PROBLEMS.