This lawn has been neglected for far too long! Setting myself a 12 month challenge to improve what we have, or should I just rip it up now and start again? Based in Sydney, living opposite bush so lots of seeds etc blowing in! Our buffalo grass is now mixed with another thin type grass (that seems to be taking over!), other areas are dead and back to soil with a large area covered in weeds!!!! I look forward to showing my before and after pic in months to come, so comment your suggestions and help advice below - Sorry I can only seem to attach one photo ( it looks much worse in person) .

Thanks for your time, much appreciate it!
Leanne.