Capacity Assessment for Surface Treatment Process

Hi,

I am looking out to understand the parameters that might help in assessing the capacity of processes(at a supplier end) like MPI, Shot Peening, Anodising in Aerospace industry. I understand if it is a chemical treatment process then factors that could be considered are -

1) Process Time w.r.t Customer demand

2) Process Capability like Tank Size and the dimension of component

3)OLE/OEE

Any other factors that could be considered for a capacity assessment?