Well, they're okay, but replace the Naboo wall which is fairly useful, as well as the Gungan wall. Also, they can easily be made with just the rocks themselves; these user madecwalls would look better, too, because the rocks would not all be the same. It's not really worth downloading unless you're lazy and/or don't care for the walls that they replace.
If it were added, however, you would probably get a 4.
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