I agree with the locality part. I'm just starting to plan for landscaping my yard, and I'd love to be able to put in my area so I could browse plants that grow well here.
I know next to nothing about this stuff, except that to have someone else do it is expensive, so it would be great to have a site to make DIY easy, along with the option to go ahead and order my plants without having to visit the nursery (of which, there are strangely very many within 2 miles of me).
There are strangely many all over the country. Once I started looking, I noticed them everywhere whenever I drove outside the city.
As to DIY, one thing that worked well for me was printing out a photo of the area and bringing it to a local nursery. They helped us put together a nice little layout, which we of course bought right there. Then, a day of digging and you're done!
I know next to nothing about this stuff, except that to have someone else do it is expensive, so it would be great to have a site to make DIY easy, along with the option to go ahead and order my plants without having to visit the nursery (of which, there are strangely very many within 2 miles of me).