I have been an active member for over 10 years, and a lurker since 2002. Some thing I would like to see; Instead of quoting somebody, maybe a comment box to reply to that comment.
I use the DIY Do It Yourself section the most and have made many friends and contacts from there. But, there are a bunch of things in the DIY Motorized Contraptions section that need to be consolidated (Hamberger Display items) into their own sub category, or moved to the indoor section and add a sub category for the Gemmy stuff.
Also maybe the ability to have a photo section on your profile.