I'd love to do something like that out front. Eliminate lawn altogether, it's boring and redundant in terms of our particular household. Nobody plays on the front lawn, it's just useless. Out the back I'd have food production for humans and native birds as my priority. And as little lawn as possible, preferably none! I have to admit, the back lawn is about 60+ years old and has been well looked after (bout the only thing that has lol) and it is pleasant to walk on, but for the amount of time anyone spends actually doing that it'd be better off as something else.