Well, I'd go further, and propose to void all rules that mandate landscaping choices, which have non-trivial maintenance cost (rule of thumb: if you need to do

Well, I'd go further, and propose to void all rules that mandate landscaping choices, which have non-trivial maintenance cost (rule of thumb: if you need to do gardening more than once a year, it's not negligible). Or just have the rules convert to "must not look abandoned", as long as that doesn't conflict with other existing rules. In case of conflict, the "must be lawn" rule would just disappear with no replacement.