Try this:
fwfilter.png
It's even got the added bonus that when using the view-filter, if you click the blue + to add a rule, the chain will automatically be defaulted to be whatever chain you've chosen in the view filter.
Useful, thanks! But doesn't help for Winbox-less environments. I run almost exclusively OS X and Linux, and I always seem to have problems with Wine. I occasionally use Webfig, and I see the option there to filter it, but it would be nice to have this on the command line as well.