Email newsletter relevancy
While they're great instructables, they make me sigh and check the delete button on the email instead of clicking through to the site to view something I could actually do.
I like the featured 'ibles usually, and this might just be me whining because I don't have the resources many on this site do have, but lately I've wanted to unsubscribe from newsletters - which would mean I would only venture to this site when I actually needed to do a diy project. No more neat ideas to be in awe of for their awesomeness - just complicated ones that are beyond me.
Maybe the newsletters could have more varied 'ibles? More simple ones and less "3D/wood/metal/arduino" ones? A balance would be nice.