Queued files copies
When you launch 2 big files copies (File Copy A, then File copy B), the finder and pathfinder do both file copies at the same time. This is utterly inefficient as the HD head constantly move from file A to File B back and forth to copy a bit of A, then a bit of B. A much more efficient way is to queue the file copy, so the computer copies A, then B at full speed because HD Head moves a lot less. Connectix's disckcopy did that in Mac OS 9 days. It's even worse with copies from network and CD/DVD copies.
Somme refinements : ability to pause and reorder the queue or relaunched a paused copy. Automatic reordering of the queue to start to do the small copies first to maximize the number of user demands in the minimum time. That feature would justify Pathfinder use by itself

3 semafore
this is one of the primary reasons i turned to Path Finder orginally. Order queue would be very helpful indeed.
3 koks
adding to this it would be nice to have a single copy/move window, not a new window for each process....this reduces clutter. if the file copy queue is implemented i assume this would be done anyways so i dont think its necessary to do a new feature request for this. queued file copy would be really sweet though...
3 genevieve
You know what ? Make this the product #2 of Cocoatech. Make it as a utility that replace the finder copy beahviour, price it at 9$ and make more bucks than all you ever got from pathfinder + you gain market exposure to cocoatech and pathfinder.