Areas for work/change - Agreed. Requires Scheduling.
Use MS rather than SDFITS as input to script
migrate numarray to numpy (do this in general, i.e., get rid of numeric/numarray schism)
Evaluate performance issues between the libraries; isolate I/O versus in-memory manipulation; look at numarray page for comments on speed; get DM case for switching back to numeric; test on all systems (also look at memory problems between 2.4.2 and 2.5.x).
replace pointing pattern analysis with review of scan intent
fix asap so asapfit can be used rather than custom Python fitter
review/compare Python gridding to CASA facilities (replace if appropriate)