Change to Sorters

I'd like to see a small change to sorters... instead of clogging up when the output is full, instead change to flow through of everything. Can alway build a loop back to the head of the sorting stack. Keeps conveyors moving...

Or maybe an on/off switch to add this functionality

I'm against this, and if it gets implemented please at least make it optional (disabled by default) so that players can enable it if they really want to.
Otherwise everyone would be forced to build more sorters (because you'd need to put an extra sorter on the final output in case some items overflowed through one of the earlier sorters), and loops would pretty much become a requirement because even short temporary blockages on one of the sorters in a chain could cause items to slip through and without the loop they'd get stuck at the end and eventually block everything requiring manual intervention. OTOH there would be only a very tiny benefit at best, because if you actually do have an output blocked for extended amounts of time the recircling loop (or whatever else you use as overflow) would quickly fill up anyway and the belt would still stop moving regardless.
If you really want to have a bypass for blocked outputs you can already combine the sorter with a priority balancer.