I just noticed a new bug (or rather issue). Many of the domains now being added to the “Real Word” category are not real word domains and many are two words! I think you need to look into this ASAP. IMHO to save your team a lot of headache it would be better to keep this category totally outside the hands of creatives or under careful scrutiny when domains are added to it. Opening up the categorization has totally mangled the page which used to look so good before. I also feel you should have a warning message that domains should not be added to wrong categories and creatives could be penalized if it occurs too often.
On another note, I find that many non-COM domain names are showing up way above .COM names [Even on your ads around the web :)]. Maybe you should have a filter just below the search box with the top 5 extensions shown and the .COM auto selected? This will save clients from having to view non-COM domains unless they actually select those extensions via the search.