After 40+ years my 16 x 32 inground pool has finally given up the ghost. 3 out of 4 walls show signs of movement and the metals walls are not in good shape rust wise and the liner is 10 years old with holes. My question is can I go with a different pool shape and have walls/footings constructed over portions of the deep end hopper that have been filled in? Must I stick with the same shape? Should I be concerned about future settling and would this be covered under the builders warranty? If this is OK what type of fill material would be best. So many questions and it is not summer yet!!!! Thanks in advance.