Hey,
I’m on a roll tonight! 
Since there’s a high percentage of users that will inevitably end up using the same, or highly similar attributes for listings, it would be nice if you could include a few niche-specific presets to allow Admins to create sites faster, (and possibly give them ideas for attributes they hadn’t thought of yet),
On the page where we create attributes, I can envision a drop down menu with either various pre-configured attributes, or pre-configured niches that would add a bunch of attributes at once. (Obviously, we could still edit them afterward and add any new ones as usual.)
For example Sq. Footage, Price/Rent, etc. for property type sites. Rates, Years of Experience, etc. for professionals, Pet details break-down (e.g Name, Gender, Age) for pet related sites.
Cheers,
Chris