A few other things to consider:
The dust acts very abrasively. Most of the spacesuit seals were damaged as the fabric was abraded within the first 24 hours of exposure. Most would not have lasted another 24 hours in the Lunar environment.
Also, the dust particles are quite small. They are comparable in size to the sort of dust that causes Silicosis.
There are a lot of issues they have to study before we try a longer term landing.
